The proportion of expenditure that goes to food...
A useful way to measure economic development?
According to the Department of Stats, the average Malaysian households spends 30% of total household expenditure on food; somewhat mid-range in the list of countries up there.
But the thing to remember from this graph is that food subsidies, laws regarding wages, preferences for food, the average household size and the distribution of income can affect how much consumers are willing to spend on food. (which would probably account for Indonesia's distorted positioning)
All in all, not a bad measure, I guess.