Year current US$ 1970 9999.99977648258 1971 19999.9995529652 1973 350000.0033527616 1974 179999.99597668622 1975 139999.9968707562 1976 780000.0086426734 1977 459999.9953061339 1978 359999.9919533733 1979 320000.000298023 1980 790000.0065565107 1981 229999.996721745 1982 3619999.960064891 1983 4800000.209361315 1984 17989999.99836087 1985 19699999.935924966 1986 16870000.3772974 1987 17310000.18119812 1988 17569999.80658293 1989 18439999.818801887 1990 18130000.09953975 1991 28469999.51452017 1992 34249999.41699206 1993 25720000.807195902 1994 26560000.307857983 1995 11399999.99478459 1996 20409999.79153275 1997 20689999.759197228 1998 19439999.729394913 1999 19840000.33140182 2000 14029999.83169139 2001 16569999.79168177 2002 17069999.81775879 2003 15879999.812692415 2004 13759999.968111515 2005 6960000.216960909 2006 4879999.890923502 2007 4920000.094920395 2008 7340000.033378602 2009 5299999.944865699 2010 4649999.886751173 2011 8689999.5803833 2012 9869899.690151215 2015 2845746.63639068 2016 15144573.68850708 2017 17226109.74311831 2018 12448748.350143433 2019 9906003.117561352 2020 2534596.68159485 2021 5191279.947757721 2022 2431600.04913807