Year current US$ 1964 170000.00178813902 1965 119999.997317791 1966 109999.999403954 1967 159999.99642372102 1968 200000.00298023198 1969 400000.00596046395 1970 370000.00476837205 1971 360000.01430511504 1972 360000.01430511504 1973 610000.014305115 1974 1269999.98092651 1975 2529999.97138977 1976 2390000.10490417 1977 3000000 1978 3440000.05722046 1979 3500000 1980 4860000.1335144 1981 4519999.98092651 1982 7389999.8664856 1983 4019999.98092651 1984 8710000.03814697 1985 5860000.1335144 1986 12390000.3433228 1987 12649999.6185303 1988 19500000 1989 22610000.6103516 1990 14529999.7329712 1991 16299999.2370605 1992 22790000.915527303 1993 22180000.3051758 1994 14949999.8092651 1995 14060000.4196167 1996 15520000.4577637 1997 24059999.4659424 1998 19899999.6185303 1999 43119998.9318848 2000 17319999.6948242 2001 17299999.237060502 2002 13409999.8474121 2003 17139999.3896484 2004 26139999.3896484 2005 24010000.2288818 2006 13739999.7711182 2007 26149999.6185303 2008 32169998.168945298 2009 15850000.3814697 2010 14050000.1907349 2011 14340000.1525879 2012 22629999.1607666 2013 17959999.084472697 2014 -6030000.20980835 2015 17479999.5422363 2016 23079999.9237061 2017 15529999.7329712 2018 17000000 2019 17840000.1525879 2020 26250000 2021 19860000.6103516 2022 19399999.6185303