Year current US$ 1964 90000.0035762787 1965 289999.99165535 1966 270000.010728836 1967 430000.00715255697 1968 2240000.00953674 1969 1570000.05245209 1970 1539999.96185303 1971 1379999.99523163 1972 200000.00298023198 1973 1409999.9666214 1974 860000.014305115 1975 2299999.95231628 1976 2609999.89509583 1977 5789999.96185303 1978 11000000 1979 1929999.94754791 1980 -259999.990463257 1981 239999.994635582 1982 -610000.014305115 1983 -680000.007152557 1984 -529999.971389771 1985 -509999.99046325695 1986 -839999.973773956 1987 -1889999.98569489 1988 -1210000.03814697 1989 379999.99523162795 1990 2630000.1144409203 1991 5960000.03814697 1992 7360000.1335144 1993 7320000.17166138 1994 8979999.54223633 1995 17350000.3814697 1996 22909999.8474121 1997 16629999.160766602 1998 18379999.1607666 1999 21659999.8474121 2000 13289999.961853001 2001 13640000.3433228 2002 11970000.2670288 2003 15850000.3814697 2004 15869999.8855591 2005 15039999.961853001 2006 18340000.1525879 2007 23760000.2288818 2008 28829999.9237061 2009 27360000.6103516 2010 24799999.237060502 2011 24319999.6948242 2012 31520000.4577637 2013 25840000.1525879 2014 29420000.0762939 2015 25610000.6103516 2016 27340000.1525879 2017 22930000.3051758 2018 33349998.4741211 2019 34229999.5422363 2020 28239999.7711182 2021 33599998.4741211 2022 28899999.6185303