Income quintile per unit of consumption;Main heating system;Total Total;Central heating;8.9 Total;Individual heating;55.1 Total;Non-fixed heating system;17.2 Total;Other;0.9 Total;Does not use any heating system;15.7 Total;Not specified;2.3 First quintile;Central heating;5.4 First quintile;Individual heating;42.9 First quintile;Non-fixed heating system;24.2 First quintile;Other;0.6 First quintile;Does not use any heating system;25.5 First quintile;Not specified;1.5 Second quintile;Central heating;6.0 Second quintile;Individual heating;50.4 Second quintile;Non-fixed heating system;20.4 Second quintile;Other;0.8 Second quintile;Does not use any heating system;20.3 Second quintile;Not specified;2.1 Third quintile;Central heating;7.9 Third quintile;Individual heating;54.6 Third quintile;Non-fixed heating system;17.9 Third quintile;Other;0.9 Third quintile;Does not use any heating system;16.3 Third quintile;Not specified;2.5 Fourth quintile;Central heating;10.9 Fourth quintile;Individual heating;60.5 Fourth quintile;Non-fixed heating system;15.5 Fourth quintile;Other;1.0 Fourth quintile;Does not use any heating system;9.7 Fourth quintile;Not specified;2.5 Fifth quintile;Central heating;13.9 Fifth quintile;Individual heating;66.7 Fifth quintile;Non-fixed heating system;8.6 Fifth quintile;Other;1.1 Fifth quintile;Does not use any heating system;7.0 Fifth quintile;Not specified;2.6