Age of the reference person	Implementation of energy efficiency improvements in households	Total
Total	Improvement have been made	19.5
Total	No, it doesn't need it	46.0
Total	No, but it would be necessary	34.4
From 16 to 29 years	Improvement have been made	19.9
From 16 to 29 years	No, it doesn't need it	39.7
From 16 to 29 years	No, but it would be necessary	40.4
From 30 to 44 years	Improvement have been made	19.6
From 30 to 44 years	No, it doesn't need it	44.0
From 30 to 44 years	No, but it would be necessary	36.4
From 45 to 64 years	Improvement have been made	18.6
From 45 to 64 years	No, it doesn't need it	45.3
From 45 to 64 years	No, but it would be necessary	36.2
From 65 and over	Improvement have been made	20.7
From 65 and over	No, it doesn't need it	49.0
From 65 and over	No, but it would be necessary	30.3