Year current US$ 1960 19999.9995529652 1961 109999.999403954 1962 2819999.9332428 1963 4380000.11444092 1964 6090000.15258789 1965 3930000.0667572 1966 3089999.91416931 1967 5130000.11444092 1968 3910000.08583069 1969 2230000.01907349 1970 3700000.04768372 1971 4130000.11444092 1972 4559999.94277954 1973 4579999.92370605 1974 8079999.923706049 1975 9710000.03814697 1976 13260000.2288818 1977 5409999.84741211 1978 13539999.961853001 1979 12439999.5803833 1980 7179999.82833862 1981 4860000.1335144 1982 1659999.9666214 1983 6429999.82833862 1984 7380000.11444092 1985 16090000.152587902 1986 1210000.03814697 1987 -109999.999403954 1988 2339999.91416931 1989 4440000.05722046 1990 9399999.61853027 1991 8130000.11444092 1992 5780000.20980835 1993 1379999.99523163 1994 5940000.05722046 1995 16180000.3051758 1996 10220000.2670288 1997 4150000.09536743 1998 730000.019073486 1999 2200000.04768372 2000 1779999.97138977 2001 2380000.1144409203 2002 6929999.82833862 2003 9289999.96185303 2004 12970000.2670288 2005 15909999.8474121 2006 55889999.3896484 2007 37509998.3215332 2008 47209999.0844727 2009 26149999.6185303 2010 32169998.168945298 2011 25940000.5340576 2012 39799999.237060495 2013 22790000.915527303 2014 28420000.0762939 2015 19280000.6866455 2016 13810000.4196167 2017 11229999.5422363 2018 20010000.2288818 2019 14550000.1907349 2020 14449999.8092651 2021 9489999.77111816 2022 12600000.3814697