Year current US$ 1965 129999.995231628 1966 340000.00357627904 1967 270000.010728836 1968 19999.9995529652 1971 1000000 1972 1000000 1973 4000000 1974 8000000 1975 3000000 1976 4000000 1977 2000000 1978 5000000 1979 6000000 1980 15000000 1981 19000000 1982 13000000 1983 20000000 1984 23000000 1985 34000000 1986 19000000 1987 10000000 1988 9000000 1989 12000000 1990 10000000 1991 3000000 1992 2000000 1993 3000000 1994 2000000 1995 1000000 1996 2000000 1997 2000000 1998 2549999.95231628 1999 2809999.94277954 2000 4150000.09536743 2001 6230000.01907349 2002 5500000 2003 27719999.3133545 2004 11010000.2288818 2005 20020000.4577637 2006 12180000.3051758 2007 10220000.2670288 2008 25639999.3896484 2009 10159999.8474121 2010 7429999.82833862 2011 9960000.03814697 2012 19840000.1525879 2013 25250000 2014 14539999.961853001 2015 24049999.237060502 2016 12119999.8855591 2017 10380000.1144409 2018 13079999.923706101 2019 17909999.8474121 2020 16000000 2021 20579999.9237061 2022 23719999.3133545