Buildings by period of construction
  2000 2010 2023
  absolute as % absolute as % absolute as %
Residential buildings   1,462,167 100.0 1,642,622 100.0 1,793,029 100.0
before 1919 327,555 22.4 350,416 21.3 333,860 18.6
1919 and 1945 192,565 13.2 186,166 11.3 198,071 11.0
1946 and 1960 192,754 13.2 191,829 11.7 185,916 10.4
1961 and 1970 173,324 11.9 173,570 10.6 171,176 9.5
1971 and 1980 195,495 13.4 195,620 11.9 193,498 10.8
1981 and 1990 204,000 14.0 201,898 12.3 200,656 11.2
1991 and 2000 176,474 12.1 177,291 10.8 178,391 9.9
2001 and 2005 * * 80,689 4.9 81,238 4.5
2006 and 2010 * * 85,143 5.2 85,205 4.8
2011 and 2015 * * * * 72,020 4.0
2016 and 2020 * * * * 61,309 3.4
2021 and 2023 * * * * 31,689 1.8
Sources: FSO - Federal Population Census, Buildings and dwellings statistics