【正文】
and transport and vehicles.Between 1957 and 2007 expenditure in all five categories changed to some extent, but the most marked change was in the food category. At the beginning of the period the proportion of expenditure on food was more than three times as high as that in all the other categories, representing more than thirty per cent of total household expenditure. However, by 2007 this figure had more than halved to around fifteen per cent, and was slightly less than expenditure on both housing and transport.The two other areas where proportions of expenditure fell over the period are clothing