Size of municipality	Improvements to thermal insulation or the heating system	Total
Total	Has made improvements to thermal insulation or the heating system	14,1
Total	No improvements have been made and it is warm enough during the cold months	60,8
Total	No improvements have been made and it is not warm enough during the cold months	25,1
Fewer than 10,000 inhabitants	Has made improvements to thermal insulation or the heating system	14,2
Fewer than 10,000 inhabitants	No improvements have been made and it is warm enough during the cold months	62,8
Fewer than 10,000 inhabitants	No improvements have been made and it is not warm enough during the cold months	23
Between 10,000 and 50,000 inhabitants	Has made improvements to thermal insulation or the heating system	12,8
Between 10,000 and 50,000 inhabitants	No improvements have been made and it is warm enough during the cold months	59,7
Between 10,000 and 50,000 inhabitants	No improvements have been made and it is not warm enough during the cold months	27,5
Between 50,000 and 100,000 inhabitants	Has made improvements to thermal insulation or the heating system	12,8
Between 50,000 and 100,000 inhabitants	No improvements have been made and it is warm enough during the cold months	60,5
Between 50,000 and 100,000 inhabitants	No improvements have been made and it is not warm enough during the cold months	26,7
Between 100,000 and 500,000 inhabitants	Has made improvements to thermal insulation or the heating system	14,6
Between 100,000 and 500,000 inhabitants	No improvements have been made and it is warm enough during the cold months	61
Between 100,000 and 500,000 inhabitants	No improvements have been made and it is not warm enough during the cold months	24,4
More than 500,000 inhabitants	Has made improvements to thermal insulation or the heating system	16,4
More than 500,000 inhabitants	No improvements have been made and it is warm enough during the cold months	59,9
More than 500,000 inhabitants	No improvements have been made and it is not warm enough during the cold months	23,7