Year current US$ 1969 3750000.00745058 1970 4090000.0706314994 1971 4630000.01013279 1972 5180000.00715256 1973 5630000.03993511 1974 5959999.8518824605 1975 6940000.070258981 1976 7590000.11719763 1977 9280000.03471971 1978 11759999.9755621 1979 12500000.149011599 1980 1990000.0095367401 1981 14049999.9113381 1982 9020000.08895993 1983 17520000.0405312 1984 10399999.7973442 1985 20449999.8688698 1986 12060000.1215935 1987 22820000.231266 1988 13159999.936819099 1989 23640000.283718098 1990 14150000.154972099 1991 27120000.1835823 1992 15610000.1335144 1993 32949999.928474396 1994 17139999.926090203 1995 57720000.8630753 1996 17209999.9189377 1997 32510000.2288818 1998 17239999.7115135 1999 32719999.9094009 2000 32580000.042915303 2001 30359999.4182587 2002 37649999.856948905 2003 39770000.3385544 2004 36600000.2622604 2005 48739999.5326996 2006 26920000.0762939 2007 38630000.3528595 2008 6409999.9908357905 2009 0 2010 0 2011 0 2012 0 2013 0 2014 0 2015 0 2016 0 2017 0 2018 0 2019 0 2020 0 2021 0