Year current US$ 1960 270000 1961 390000 1962 810000 1963 1840000 1964 2880000 1965 3850000 1967 8610000 1968 14030000 1969 18750000 1970 16129999.999999998 1971 19890000 1972 56210000 1973 58100000 1974 70640000 1975 136890000 1976 131300000.00000001 1977 177900000 1978 189620000 1979 284640000 1980 271290000 1981 245370000 1982 240420000 1983 210760000 1984 175580000 1985 194190000 1986 328910000 1987 308360000 1988 431960000 1989 393510000 1990 521289999.99999994 1991 610040000 1992 516950000.00000006 1993 423580000 1994 370190000 1995 351530000 1996 405500000 1997 361230000 1998 293700000 1999 289600000 2000 337310000 2001 325660000 2002 344660000 2003 608670000 2004 586640000 2005 638570000 2006 728590000 2007 748500000 2008 902690000 2009 807730000 2010 828750000 2011 1203910000 2012 951780000 2013 1071150000.0000001 2014 984790000 2015 846940000 2016 837490000 2017 1022840000 2018 1174620000 2019 1077670000 2020 1111560000 2021 1345590000 2022 1032410000.0000001