Four-yearly Wage Structure Survey Annual average earnings per worker and sex Nationality and job Unidades: € ;Todas las ocupaciones;1 Directors and managers;2 Scientific and intellectual technicians and professionals ;3 Technicians; support professionals;4 Accounting, administrative and other office employees;5 Workers in catering, personal, and protection services and salespersons;6 Skilled agricultural, livestock, forestry and fishing sector workers;7 Craftspersons and skilled workers in manufacturing and construction (except installation and machinery operators ;8 Installation and machinery operators and assemblers;9 Basic occupations;0 Military occupations; National Total; Both sexes; Total;26.948,87;59.478,63;39.356,06;31.899,95;24.198,08;18.992,66;21.383,06;24.318,03;24.792,88;17.017,06;..; Spanish ;27.500,25;58.605,79;39.453,52;31.997,61;24.337,54;19.394,21;21.721,58;24.697,2;25.170,98;17.226,27;..; Extranjera;21.438,73;-76.014,53;37.130,18;30.232,75;22.123,01;15.777,95;..;21.607,51;21.066;16.032,37;..; Females; Total;24.359,82;53.368,32;36.878,63;28.515,6;22.620,97;16.750,69;..;19.741,84;21.341,19;14.089,51;..; Spanish ;24.833,27;52.591,7;37.061,2;28.618,94;22.740,22;16.911,76;..;20.058,07;21.943,3;14.265,29;..; Extranjera;19.010,31;-67.892,5;32.092,25;26.847,72;20.805,49;15.327,89;..;-17.791,19;-17.212,69;13.092,05;..; Males; Total;29.381,84;62.991,86;43.023,06;34.550,52;27.581,21;22.611,09;21.715,91;24.938,99;25.165,95;20.017,43;..; Spanish ;30.058,61;62.060,16;43.042,64;34.628,73;27.779,47;23.512,82;22.070,43;25.313,05;25.504,93;20.456,44;..; Extranjera;23.293,49;-80.775,83;42.648,15;33.152,5;24.768,48;16.363,58;..;22.207,3;21.666,29;18.275,37;..; Andalucía; Both sexes; Total;24.041,96;49.795,14;37.501,19;28.202,6;21.936,05;17.571,87;..;22.767,01;21.450,82;16.142,91;..; Spanish ;24.297,1;-49.692,15;37.400,43;28.238,1;22.069,71;17.751,81;..;22.974,99;21.746,85;16.170,33;..; Extranjera;19.632,55;..;-41.022,92;-26.943,05;-19.018,7;-15.267,46;..;..;-18.064,14;-15.825,93;..; Females; Total;21.649,5;-45.910,44;35.314,98;24.038,6;20.219,16;15.418,54;..;-16.870,04;-16.672,43;13.603,47;..; Spanish ;21.855,71;-45.914,88;35.294,66;24.019,93;20.307,44;15.470,75;..;-17.554,92;-16.680,58;13.656,72;..; Extranjera;-17.873,09;..;..;..;-18.335,93;..;..;..;..;..;..; Males; Total;26.159,02;-51.204,3;40.640,56;31.464,19;25.094,09;20.865,25;..;23.445,16;21.783,78;18.507,39;..; Spanish ;26.470,07;-51.075,48;40.434,57;31.543,36;25.301,94;21.270,27;..;23.516,43;22.087,3;18.614,9;..; Extranjera;21.039,85;..;..;..;..;..;..;..;..;..;..; Aragón; Both sexes; Total;26.012,71;-59.065,6;37.044,29;29.156,7;24.737,41;18.230,78;..;24.961,78;25.414,47;17.375,99;..; Spanish ;26.930,57;-58.556,77;37.158,88;29.540,03;24.944,73;18.713,79;..;25.285,02;26.421,64;17.379,27;..; Extranjera;19.580,41;..;..;..;..;-15.025;..;-23.401,08;-21.048,2;-17.368,06;..; Females; Total;23.138,72;-51.921,05;35.288,36;26.788,22;22.742,96;16.504,76;..;-19.993,54;-19.389,12;14.460,68;..; Spanish ;23.965,48;-51.607,65;35.412,32;27.060,57;22.823,36;16.764,12;..;-19.651,07;-20.649,48;14.282,17;..; Extranjera;-16.653,9;..;..;..;..;..;..;..;..;-14.914,93;..; Males; Total;28.789,96;-62.097,64;39.927,02;31.106,38;-29.075,64;-22.578,92;..;25.663,7;26.346,81;20.864,83;..; Spanish ;29.872,83;-61.521,03;40.030,48;31.599,75;-29.792,05;-23.422,18;..;26.124,01;27.170,73;21.211,88;..; Extranjera;21.926,89;..;..;..;..;..;..;-23.524,61;-22.309,36;-20.076,8;..; Asturias, Principado de; Both sexes; Total;26.745,93;-47.967,12;41.038,76;31.399;23.696,06;17.289,43;..;27.117,63;30.057,98;15.808,32;..; Spanish ;27.003,18;-47.783,82;41.065,68;31.512,11;23.723,78;17.374,56;..;27.317,67;30.363,78;15.886,89;..; Extranjera;-20.111,19;..;..;..;..;..;..;..;..;..;..; Females; Total;23.792,42;..;40.009,62;26.625,96;22.287,75;16.121,82;..;..;..;-12.246,28;..; Spanish ;23.990,53;..;40.028,34;26.593,78;22.305,05;16.164,28;..;..;..;-12.247,79;..; Extranjera;..;..;..;..;..;..;..;..;..;..;..; Males; Total;29.573,74;-55.743,59;43.052,08;34.783,89;-26.816;-19.819,04;..;27.416,65;30.508,79;20.626,93;..; Spanish ;29.978,07;-55.465,78;43.123,52;35.059,07;-26.860,56;-20.110,1;..;27.628,01;30.840,45;20.937,23;..; Extranjera;-22.182,79;..;..;..;..;..;..;..;..;..;..; Balears, Illes; Both sexes; Total;27.145,79;-65.599,12;37.719,55;30.656,09;25.892,81;23.457,95;..;23.012,36;24.103,42;18.767,73;..; Spanish ;27.764,79;-58.447,49;38.296,92;31.416,89;25.694,68;23.732,8;..;23.760,56;-24.659,46;18.867,36;..; Extranjera;24.032,35;..;-31.840,43;-24.622,21;-27.327,1;-22.021,3;..;-20.983,28;..;-18.497,68;..; Females; Total;26.054,2;-72.241,92;36.253,18;27.751,38;23.601,23;21.486,36;..;-19.664,88;..;18.182,61;..; Spanish ;25.946,13;-56.665,42;36.543,58;28.611,57;23.518,47;21.276,16;..;-19.622,18;..;-18.324,07;..; Extranjera;26.734,91;..;..;..;-24.224,01;-22.707,14;..;..;..;..;..; Males; Total;28.155,99;-59.866,86;39.929,81;33.285,18;30.066,43;26.277,29;..;23.210,22;-25.756,08;19.332,84;..; Spanish ;29.563,6;-59.866,29;40.990,22;33.702,17;-29.710,46;27.388,31;..;24.046,32;-26.194,67;-19.551,39;..; Extranjera;22.252,75;..;..;..;..;..;..;-21.019,13;..;-18.951,54;..; Canarias; Both sexes; Total;23.096,92;-44.339,85;39.531,82;26.698,81;21.096,76;18.142,36;..;20.000;20.236,45;16.280,14;..; Spanish ;23.620,22;-45.376,58;39.899,75;27.317,51;21.312,45;18.414,33;..;20.152,98;20.478,75;16.161,65;..; Extranjera;18.287,94;..;..;-20.910,43;-18.418,3;-16.505,15;..;..;..;-17.289,02;..; Females; Total;22.574,98;-41.054,89;38.068,44;25.235,1;20.645,56;17.313,77;..;-18.653,65;..;14.508,83;..; Spanish ;23.095,76;-43.206,23;38.476,31;25.650,22;20.794,05;17.409,75;..;..;..;14.212,83;..; Extranjera;-17.953,14;..;..;..;..;-16.783,31;..;..;..;..;..; Males; Total;23.588,7;-46.125,88;42.111,56;27.872,29;22.027,32;19.216,27;..;20.053,5;20.621,53;18.024,71;..; Spanish ;24.111,05;-46.497,51;42.409,29;28.666,22;-22.378,42;19.679,43;..;20.221,89;20.712,63;18.098,09;..; Extranjera;-18.623,52;..;..;..;..;..;..;..;..;..;..; Cantabria; Both sexes; Total;25.291,14;-51.464,19;38.209,17;31.028,14;23.184,52;18.078,34;..;24.764,69;28.092,76;17.194,23;..; Spanish ;25.764,86;-51.973,91;38.561,07;31.077,46;23.206,82;18.507,05;..;25.033,66;28.420,22;17.247,05;..; Extranjera;-17.896,38;..;..;..;..;..;..;..;..;..;..; Females; Total;22.564,11;..;36.075,96;-26.396,76;21.428,07;17.312,59;..;-18.832,4;..;-12.422,57;..; Spanish ;22.800,17;..;36.437,18;-26.456,93;21.347,83;17.393,94;..;-18.839,43;..;-12.127,84;..; Extranjera;..;..;..;..;..;..;..;..;..;..;..; Males; Total;27.820,83;-56.880,87;-41.615,43;35.516,22;-26.978,52;-19.311,5;..;25.853,17;28.453,79;21.534,53;..; Spanish ;28.598,23;-57.981,8;-41.935,79;35.534,03;-27.200,3;-20.465,79;..;26.253,09;28.829,44;-21.879,87;..; Extranjera;-18.048,85;..;..;..;..;..;..;..;..;..;..; Castilla y León; Both sexes; Total;24.186,89;-51.813,77;35.409,46;29.487,32;22.081,26;17.538,64;..;24.647,72;24.137,36;15.971,41;..; Spanish ;24.595,07;-51.780,37;35.597,72;29.590,17;22.137,8;17.746,04;..;25.098,7;24.637,45;16.219,14;..; Extranjera;17.713,48;..;..;..;..;..;..;-21.113,45;-18.818,97;-13.927,67;..; Females; Total;21.773,27;..;33.577,11;26.222,54;20.641,62;15.845,01;..;-21.847,06;-23.064,46;13.129,45;..; Spanish ;22.167,03;..;33.825,1;26.230,64;20.644,36;15.915,02;..;-22.982,43;-27.305,37;13.364,26;..; Extranjera;-14.719,54;..;..;..;..;..;..;..;..;..;..; Males; Total;26.548,08;-53.758,99;38.871,55;32.590,22;25.024,05;21.097,37;..;25.077,81;24.248,98;19.307,01;..; Spanish ;27.002,79;-53.711,26;38.929,27;32.823,77;25.196,68;21.806,06;..;25.380,65;24.416,65;19.487,7;..; Extranjera;-20.073,32;..;..;..;..;..;..;..;..;..;..; Castilla - La Mancha; Both sexes; Total;23.751,71;-45.868,06;35.459,64;27.727,65;22.894,52;18.003,25;..;23.479,98;22.812,84;17.119,87;..; Spanish ;24.182,86;-45.868,06;35.469,67;27.797,34;22.901,29;18.439,04;..;23.659,48;22.883,7;17.492,94;..; Extranjera;17.787,42;..;..;..;..;..;..;-21.729,91;-22.071,46;-14.748,64;..; Females; Total;21.312,65;..;33.534,92;26.452,36;21.071,79;15.156,86;..;-20.840,06;-19.119,75;15.067,33;..; Spanish ;21.901,12;..;33.512,37;26.705,69;21.050,48;15.470,91;..;-21.085,88;-19.006,67;15.744,56;..; Extranjera;-13.604,03;..;..;..;..;..;..;..;..;..;..; Males; Total;25.813,23;-47.253,76;38.554,71;28.571,29;27.015,8;23.271,88;..;23.786,91;23.234,37;19.606,81;..; Spanish ;26.098,06;-47.253,76;38.654,67;28.494,31;27.069,51;23.598,14;..;23.959,22;23.345,55;19.502,34;..; Extranjera;-21.678,58;..;..;..;..;..;..;-22.110,22;..;..;..; Cataluña; Both sexes; Total;28.774,55;59.304,43;39.424,89;33.604,26;25.944,52;20.367,01;..;26.762,95;27.838,96;17.786,75;..; Spanish ;29.544,07;58.848,95;39.360,5;33.578,58;26.066,91;21.192,08;..;27.270,31;28.164,09;18.268,6;..; Extranjera;23.507,25;..;40.266,87;-33.921,65;24.985,93;-16.005,84;..;-23.852,44;-24.811,9;16.360,68;..; Females; Total;25.659,03;-53.168,85;36.889,88;29.783,55;24.170,47;17.405,9;..;20.960,55;-24.460,69;14.275,94;..; Spanish ;26.293,16;-53.478,02;37.019,84;29.613,21;24.239,66;17.813,89;..;-20.990,38;-25.022,4;14.620,52;..; Extranjera;20.734;..;-34.732,93;-31.797,17;-23.574,89;-14.944,46;..;..;..;-13.001,4;..; Males; Total;31.878,42;63.260,08;43.311,59;36.717,12;29.702,57;25.088,32;..;27.833,72;28.352,47;21.118,48;..; Spanish ;32.883,69;62.260,3;43.091,63;36.789,41;30.064,66;26.868,58;..;28.381,43;28.636,35;22.108,38;..; Extranjera;25.745,2;..;-45.461,03;-35.789,3;-27.333,07;-17.299,24;..;-24.549,62;-25.669,03;18.698,04;..; Comunitat Valenciana; Both sexes; Total;24.510,34;53.406,77;36.865,01;29.390,55;22.208,7;17.963,39;..;22.399,59;24.176,22;16.099,26;..; Spanish ;25.137,05;53.099,82;37.342,06;29.604,4;22.584,3;18.305,84;..;22.693,67;24.401,02;16.234,73;..; Extranjera;18.274,46;..;-23.342,61;-25.703,67;-15.413,84;-15.523,5;..;-19.982,83;-21.614,09;-15.432,9;..; Females; Total;22.135,35;-52.809,09;35.578,46;26.238,39;20.642,84;15.619,95;..;18.340,92;-20.207,48;13.355,82;..; Spanish ;22.727,67;-50.860,78;36.247,7;26.524,75;21.021,63;15.641,57;..;18.706,23;-20.111,79;13.313,96;..; Extranjera;16.321,56;..;..;..;..;-15.473,92;..;..;..;-13.573,9;..; Males; Total;26.683,85;-53.724,44;38.708,16;31.760,92;25.700,78;22.136,33;..;23.134,27;24.612,09;18.859,31;..; Spanish ;27.336,76;-54.249,58;38.890,49;31.923,92;25.953,31;22.962,74;..;23.434,19;24.867,05;19.229,91;..; Extranjera;20.104,84;..;..;..;..;..;..;-20.756,68;-21.667,61;-17.135,16;..; Extremadura; Both sexes; Total;21.922,73;-38.643,15;34.214,78;25.676,17;19.916,88;14.894,05;..;20.921,81;19.482,5;14.597,75;..; Spanish ;22.023,95;-38.420,14;34.199,53;25.732,25;19.948,73;14.960,43;..;21.047,46;19.669,26;14.712,46;..; Extranjera;-17.722,52;..;..;..;..;..;..;..;..;..;..; Females; Total;20.637,14;..;32.849,82;-25.054,92;17.830,96;13.775,72;..;..;..;-12.017,73;..; Spanish ;20.806,67;..;33.068,2;-25.165,88;17.854,57;13.845,51;..;..;..;-12.178;..; Extranjera;..;..;..;..;..;..;..;..;..;..;..; Males; Total;23.170,92;-44.275,42;36.860,21;26.047,07;-23.832,38;-17.316,22;..;21.116,11;19.641,72;17.081,16;..; Spanish ;23.214,84;-43.895,37;36.409,51;26.068,8;-23.883,76;-17.336,74;..;21.244,6;19.835,57;17.160,23;..; Extranjera;-21.599,26;..;..;..;..;..;..;..;..;..;..; Galicia; Both sexes; Total;24.169,68;-45.976,32;35.966,08;28.840,69;23.000,28;16.692,18;..;23.140,93;22.686,73;17.004,78;..; Spanish ;24.405,57;-45.692,37;36.021,99;28.883,05;23.140,67;16.861,36;..;23.301,59;23.028,93;17.139,22;..; Extranjera;-17.507,16;..;..;..;..;..;..;..;..;..;..; Females; Total;21.912,75;-38.602,46;34.080,04;26.164,56;21.359,78;15.625,72;..;-19.208,77;-20.135,42;14.392,68;..; Spanish ;22.075,91;-38.602,46;34.161,23;26.334,07;21.479,09;15.745,39;..;-19.313,78;-20.032,64;14.428,87;..; Extranjera;-15.635,76;..;..;..;..;..;..;..;..;..;..; Males; Total;26.626,89;-53.038,91;39.285,88;30.931,21;26.594,29;19.560,23;..;23.963,9;23.000,15;20.364,85;..; Spanish ;26.991,03;-52.580,71;39.286,31;30.859,25;26.758,84;19.981,85;..;24.154,19;23.397,27;20.851,47;..; Extranjera;-18.684,66;..;..;..;..;..;..;..;..;..;..; Madrid, Comunidad de; Both sexes; Total;31.230,73;71.995,96;42.554,66;35.716,32;25.873,2;20.792,29;..;24.564,51;24.510,82;16.499,23;..; Spanish ;32.253,03;70.616,06;42.757,7;35.827,7;26.226,96;21.719,25;..;25.620,19;25.246,73;17.049,19;..; Extranjera;23.350,11;-88.607,38;39.122,51;-34.256,41;-21.789,82;15.602,77;..;-20.897,53;-19.701,09;14.975,01;..; Females; Total;28.123,47;61.378,6;38.778,19;32.360,34;24.285,61;18.207,68;..;-20.101,95;-20.681,23;13.740,27;..; Spanish ;29.001,27;61.126,93;39.012,37;32.618,45;24.632,8;18.718,5;..;-21.115,07;-21.454,78;14.389,82;..; Extranjera;20.077,02;..;-34.215,63;-28.979,62;-20.223,82;-15.052,36;..;..;..;-11.276,58;..; Males; Total;34.113,4;78.627,31;47.191,8;38.336,23;29.716,43;23.833,16;..;24.843,02;24.844,97;19.576,99;..; Spanish ;35.379,84;76.776,18;47.433,64;38.332,83;30.100,25;25.362,25;..;25.901,11;25.546,16;20.543,73;..; Extranjera;25.645,79;..;-43.683,62;-38.380,81;-25.425,61;-16.146,56;..;-21.166,83;-19.982,78;-17.597,98;..; Murcia, Región de; Both sexes; Total;23.851,69;-49.956,98;38.845,86;28.811,78;21.524,87;16.303,11;..;22.745,66;21.813,05;16.259,69;..; Spanish ;24.190,18;-50.565,99;38.891,51;28.914,26;21.523,97;16.415,46;..;23.106,22;21.923,26;16.550,45;..; Extranjera;18.540,21;..;..;..;..;..;..;-20.106,73;..;-14.677,93;..; Females; Total;20.956,37;..;34.893,14;-25.622,31;19.369,82;15.386,42;..;-19.420,96;..;12.957,89;..; Spanish ;21.165,02;..;34.955,37;-25.545,68;19.356,85;15.485,13;..;-19.733,05;..;13.071,04;..; Extranjera;-16.113,41;..;..;..;..;..;..;..;..;..;..; Males; Total;26.240,66;-52.201,21;43.553,83;30.467,92;-25.875,27;17.929,08;..;23.442,66;21.885,76;19.511,9;..; Spanish ;26.777,96;-53.224,32;43.576,29;30.655,43;-25.892,29;18.098,6;..;23.738,56;22.011,62;20.340,58;..; Extranjera;-19.639,11;..;..;..;..;..;..;-20.887,13;..;..;..; Navarra, Comunidad Foral de; Both sexes; Total;29.189,52;-61.122,95;39.276,33;34.239,89;27.482,93;19.418,1;..;27.346,16;28.107,94;21.535,68;..; Spanish ;30.227,48;-61.178,98;39.552,21;34.679,19;27.539,43;20.459,76;..;28.042,17;28.641,9;22.140,19;..; Extranjera;19.635,74;..;..;..;..;..;..;-22.886,52;..;-18.831,25;..; Females; Total;26.033,3;..;37.100,09;29.823,31;26.095,84;17.643,57;..;-20.143,94;-24.485,32;16.513,77;..; Spanish ;26.757,39;..;37.203,15;30.422,47;26.117,61;17.813,95;..;-20.101,86;-25.076,53;-17.230,45;..; Extranjera;-17.102,06;..;..;..;..;..;..;..;..;..;..; Males; Total;31.959,85;-66.990,76;42.851,31;37.252,03;-30.878,79;-22.844,13;..;28.776,88;28.810,43;25.631,22;..; Spanish ;33.422,49;-67.026,27;43.507,82;37.551,37;-30.979,93;-27.263,03;..;29.547,27;29.352,93;26.125,21;..; Extranjera;-21.046,87;..;..;..;..;..;..;..;..;-23.395,08;..; País Vasco; Both sexes; Total;32.313,73;65.822,13;44.878,62;36.262,9;28.567,75;22.455,95;..;29.763,5;32.605,83;21.099,99;..; Spanish ;33.087,22;-65.848,32;45.019,07;36.666,51;28.800,28;23.008,02;..;30.472,54;33.224,15;21.618,78;..; Extranjera;21.722,29;..;..;..;..;..;..;-24.128,9;..;-18.574,1;..; Females; Total;29.314,69;-58.103,39;42.944,44;31.535,29;27.571,93;19.343,58;..;-24.363,4;-27.724,2;16.312,76;..; Spanish ;29.886,87;-58.237,45;43.070,4;32.160,28;27.731,72;19.616,86;..;-25.335,33;-27.667,45;16.334,44;..; Extranjera;-18.869,63;..;..;..;..;..;..;..;..;..;..; Males; Total;35.095,67;-68.971,47;48.234,36;39.835,83;31.017,96;27.784,56;..;30.324,42;33.165,93;25.324,75;..; Spanish ;36.156,54;-68.927,24;48.413,13;40.014,87;31.459,76;29.074,32;..;31.010,79;33.915,81;26.461,16;..; Extranjera;-23.377,7;..;..;..;..;..;..;-24.909,59;..;..;..; Rioja, La; Both sexes; Total;24.903,38;-56.295,97;34.661,26;29.164,98;23.439,73;17.785,6;..;24.356,82;23.955,79;15.815,46;..; Spanish ;25.447,58;-55.181,4;34.830,91;29.254,78;23.440,47;17.966,53;..;24.778,16;23.914,49;15.536,49;..; Extranjera;-20.021,48;..;..;..;..;..;..;-21.816,2;..;-16.809,15;..; Females; Total;22.264,39;..;-33.981,51;-26.837,64;-21.671,89;15.666,11;..;-19.080,44;..;-12.473,94;..; Spanish ;22.790,01;..;-34.155,98;-26.771,29;-21.529,31;15.590,5;..;-19.461,27;..;-12.325,53;..; Extranjera;-16.855,17;..;..;..;..;..;..;..;..;..;..; Males; Total;27.741,6;-60.535,18;-35.890,17;-31.309,32;-27.511,34;-23.358,15;..;25.699,87;24.812,48;-20.079,49;..; Spanish ;28.384,19;-58.976,74;-36.045,37;-31.492,1;-27.835,41;-24.020,4;..;26.176,01;-24.900,71;-20.030,18;..; Extranjera;-22.692,76;..;..;..;..;..;..;..;..;..;..; Ceuta y Melilla; Both sexes; Total;27.370,56;..;-39.903,87;-27.126,5;-24.240,74;23.830,77;..;-23.194,09;-24.530,94;-17.600,99;..; Spanish ;27.727,27;..;-39.967,71;-27.291,89;-24.335,93;23.950,71;..;-24.107,92;-25.002,71;-17.918,3;..; Extranjera;-20.388,42;..;..;..;..;..;..;..;..;..;..; Females; Total;26.535,81;..;-39.381,56;-26.610,78;-22.311,28;-21.166,86;..;..;..;-14.718,77;..; Spanish ;26.807,39;..;-39.406,06;-26.714,44;-22.420,86;-21.245,9;..;..;..;-15.140,31;..; Extranjera;..;..;..;..;..;..;..;..;..;..;..; Males; Total;28.168,62;..;-40.884,91;-27.658,33;-27.126,09;-26.350,47;..;-23.131,79;-24.456,88;-20.786,71;..; Spanish ;28.642,38;..;-41.061,57;-27.889,49;-27.224,55;-26.523,35;..;-24.070,11;..;-21.036,83;..; Extranjera;-21.580,55;..;..;..;..;..;..;..;..;..;..; Notas: The data is not available when the number of sample observations is less than 100. When the box is marked with the '-' sign prior to the information, this indicates that the number of sample observations is between 100 and 500, and therefore the figure is not very trustworthy and should be interpreted with care. Fuente: