Year current US$ 1965 9999.99977648258 1966 9999.99977648258 1970 19999.9995529652 1972 119999.997317791 1973 9999.99977648258 1974 209999.993443489 1975 170000.00178813902 1976 140000.000596046 1977 370000.00476837205 1978 430000.00715255697 1979 519999.980926514 1980 330000.013113022 1981 3690000.05722046 1982 4019999.98092651 1983 6050000.19073486 1984 5960000.03814697 1985 5519999.98092651 1986 3730000.01907349 1987 1470000.02861023 1988 6719999.79019165 1989 4489999.771118159 1990 4239999.771118159 1991 3410000.08583069 1992 4780000.20980835 1993 4170000.07629395 1994 1759999.9904632599 1995 3710000.03814697 1996 2720000.02861023 1997 2170000.07629395 1998 5949999.80926514 1999 5329999.92370605 2000 5539999.96185303 2001 4429999.82833862 2002 5179999.82833862 2003 7599999.90463257 2004 13439999.5803833 2005 12899999.6185303 2006 12319999.6948242 2007 11000000 2008 14800000.1907349 2009 15710000.038146999 2010 17049999.237060502 2011 14850000.3814697 2012 10829999.923706101 2013 13489999.7711182 2014 8909999.84741211 2015 15369999.8855591 2016 10109999.6566772 2017 9539999.96185303 2018 10630000.1144409 2019 12420000.076293899 2020 14800000.1907349 2021 14510000.2288818 2022 13760000.2288818