Main dwellings in buildings destined mainly for dwellings according to year of construction of the building (grouped) by type of heating . 48-Vizcaya

			TOTAL	Before 1900	1900-1920	1921-1940	1941-1950	1951-1960	1961-1970	1971-1980	1981-1990	1991-2001
TOTAL			395128	22959	10197	16236	16752	57273	118808	90229	28856	33818
			14,55%	3,46%	4,03%	6,68%	9,56%	7,68%	11,05%	25,55%	29,69%	13,15%
With central heating
With individual heating			45,92%	37,77%	37,45%	44,37%	43,05%	39,58%	41,19%	44,14%	55,05%	80,49%
Without heating installation, but with individual room heaters			35,48%	48,62%	50,60%	42,77%	42,75%	47,76%	43,46%	27,64%	13,62%	5,66%
Without any means			4,05%	10,15%	7,91%	6,18%	4,64%	4,99%	4,30%	2,66%	1,64%	0,69%

Due to an error in assigning the labels, the data corresponding to individual heating and group heating have been modified with date 13/05/04. In the previous version both categories were interchanged between themselves.