Year current US$ 1963 59999.9986588955 1964 119999.997317791 1965 370000.00476837205 1967 2690000.05722046 1968 3559999.94277954 1969 3730000.01907349 1970 2779999.97138977 1971 3549999.95231628 1972 7670000.07629395 1973 12140000.3433228 1974 17500000 1975 18870000.8392334 1976 22290000.915527303 1977 17989999.7711182 1978 14260000.2288818 1979 24399999.6185303 1980 28350000.3814697 1981 14510000.2288818 1982 14649999.6185303 1983 15199999.8092651 1984 14170000.076293899 1985 19649999.6185303 1986 14460000.038146999 1987 26780000.6866455 1988 27319999.6948242 1989 29450000.762939498 1990 31190000.5340576 1991 27360000.6103516 1992 28389999.3896484 1993 17969999.3133545 1994 17430000.3051758 1995 19770000.4577637 1996 23309999.4659424 1997 17319999.6948242 1998 15939999.5803833 1999 11319999.6948242 2000 14199999.8092651 2001 13560000.4196167 2002 14420000.076293899 2003 25559999.4659424 2004 29920000.0762939 2005 42119998.9318848 2006 51939998.626709 2007 45509998.3215332 2008 65849998.474121094 2009 66819999.694824204 2010 47689998.626709 2011 76849998.4741211 2012 77599998.4741211 2013 78300003.0517578 2014 72419998.1689453 2015 63680000.3051758 2016 47099998.4741211 2017 57669998.1689453 2018 54680000.3051758 2019 47400001.5258789 2020 52369998.9318848 2021 57209999.0844727 2022 46950000.762939505