Year current US$ 1960 10699999.8092651 1961 13399999.6185303 1962 10899999.6185303 1963 17899999.6185303 1964 7510000.228881841 1965 12970000.2670288 1966 8130000.11444092 1967 2180000.0667572 1968 10380000.1144409 1969 9510000.22888184 1970 4880000.11444092 1971 12510000.2288818 1972 6210000.03814697 1973 11460000.038146999 1974 4349999.90463257 1975 5530000.20980835 1976 3980000.01907349 1977 8180000.305175779 1978 7360000.1335144 1979 7320000.17166138 1980 27360000.6103516 1981 27639999.3896484 1982 48900001.5258789 1983 51479999.5422363 1984 104610000.61035201 1985 55930000.3051758 1986 159279998.779297 1987 215050003.05175802 1988 197229995.727539 1989 164479995.727539 1990 111260002.13623 1991 54610000.6103516 1992 24079999.9237061 1993 97379997.253418 1994 32599998.4741211 1995 11800000.1907349 1996 1519999.98092651 1997 6050000.19073486 1998 8359999.65667725 1999 19600000.3814697 2000 2160000.08583069 2001 28979999.5422363 2002 7679999.82833862 2003 7800000.19073486 2004 16180000.3051758 2005 11079999.923706101 2006 8449999.80926514 2007 6599999.90463257 2008 25500000 2009 5940000.05722046 2010 10529999.7329712 2011 18579999.9237061 2012 10380000.1144409 2013 6849999.90463257 2014 7599999.90463257 2015 13439999.5803833 2016 13680000.3051758 2017 14189999.5803833 2018 18020000.4577637 2019 23670000.0762939 2020 18100000.3814697 2021 541400024.414063 2022 17879999.1607666