Year current US$ 1970 0 1971 240000.000223517 1972 199999.99739229702 1973 239999.99836087198 1974 199999.99739229702 1975 279999.993741512 1976 459999.989718199 1977 459999.98785555403 1978 330000.003799796 1979 1530000.02168119 1980 1329999.97772276 1981 4619999.85389411 1982 7240000.160411 1983 2800000.06593764 1984 8030000.09059906 1985 6199999.98435378 1986 8619999.90977347 1987 7909999.73937869 1988 24970000.296831097 1989 30909999.7673184 1990 36780000.673607 1991 47150000.2834946 1992 23450000.5580485 1993 13749999.8789281 1994 10429999.8655915 1995 11769999.852404 1996 11160000.0020117 1997 12579999.9516457 1998 11569999.746978302 1999 13639999.9335408 2000 12980000.1811236 2001 9940000.10192394 2002 13480000.0656396 2003 18349999.669939302 2004 21010000.526905097 2005 165750000.435859 2006 21190000.21182 2007 22460000.263527 2008 25729999.9538809 2009 23719999.9243021 2010 24109999.803826198 2011 35240000.4398078 2012 33839999.5788932 2013 43739999.564364605 2014 73299998.3653426 2015 59890000.680461496 2016 53840001.0019541 2017 42029999.114573 2018 45840000.0166148 2019 44570000.2294034 2020 54669999.437406704 2021 95119998.1980026 2022 31169999.511912443