Year current US$ 1970 19999.9995529652 1971 19999.9995529652 1972 9999.99977648258 1973 19999.9995529652 1974 209999.993443489 1975 230000.004172325 1976 159999.99642372102 1977 289999.99165535 1978 349999.99403953605 1979 1480000.01907349 1980 2329999.92370605 1981 2299999.95231628 1982 2619999.8855590797 1983 1649999.97615814 1984 6510000.228881841 1985 4820000.17166138 1986 11409999.8474121 1987 29659999.8474121 1988 24579999.9237061 1989 21069999.6948242 1990 37389999.3896484 1991 64550003.0517578 1992 36290000.9155273 1993 136210006.71386698 1994 101309997.558594 1995 110900001.52587901 1996 41270000.4577637 1997 40490001.6784668 1998 85160003.6621094 1999 51569999.6948242 2000 47759998.3215332 2001 40700000.762939505 2002 156929992.67578098 2003 37909999.8474121 2004 38650001.5258789 2005 42639999.3896484 2006 64849998.474121094 2007 61779998.779296905 2008 74930000.3051758 2009 113790000.915527 2010 76900001.5258789 2011 91940002.44140631 2012 60349998.4741211 2013 62709999.0844727 2014 77510002.1362305 2015 77800003.0517578 2016 80559997.55859381 2017 55650001.5258789 2018 70660003.6621094 2019 47990001.6784668 2020 95559997.55859381 2021 97750000 2022 80910003.6621094