Shares remained roughly stable for LDCs but increased slightly for the other three groupings. This evidence suggests that, for food-importing developing countries in general, meeting the cost of food import bills has become less onerous over time. Konandreas (2012) conducts a more disaggregated analysis for the period 1990-2009, looking at individual countries in the LDCs and NFIDC groups and at their average, maximum and minimum shares of food import expenditure in both total merchandise imports and exports.