Trends in the individual performance of donor countries are mixed. Denmark, Netherlands, Norway, Sweden and Finland continue to donate the largest share of their economic output, with aid as a share of GNP averaging 0.92%. The ODA/GNP ratio of the USA was 0.31% in the early 1970s. In 1988, it was 0.21%, and in 1989 0.15%, the lowest ratio in the group. In 1992 total US aid appropriations was 0.20%, in the OECD group greater only than Irish aid. Aid from Japan has increased more rapidly in the 1980s than the DAC average but not faster than its GNP. Thus, Japan's ODA/GNP ratio has hardly improved since the early 1980s and is still below the DAC average, at 0.32%.
Outside the OECD, concessional flows from OPEC countries declined sharply during the 1980s, from over $10 billion before 1981 to about $2 billion in 1988. The largest donors were Saudi Arabia and Kuwait, which provided, respectively, 3.3% and 0.8% of their GNP in official development aid in 1988. Assistance reported by the USSR rose from 1% of GNP in 1976-1980 to 1.4% in 1988.
In the 1990s, the world's richest 30 countries still represented 78% of global gross domestic product, with the remaining 22% divided among the 150 poorer countries. On average the wealthy countries spent 0.29% of their national income on official development aid in the 1990s.