In the 1970s, multilateral assistance programs started to play an important role in development planning and accounted for more than 70 percent of funding for development planning. By the end of the 1980s, the great majority of foreign aid was in the form of multilateral assistance programs. The major sources of borrowing or grants for these programs were the International Development Association of the World Bank and the Asian Development Bank. Most of these loans could be characterized as soft loans.