Year	current US$
1968	19896625.889635134
1969	18364711.719708696
1970	30158122.988307476
1971	33300108.157623485
1972	39088572.619064495
1973	59838256.03596026
1974	50372101.63286073
1975	58343200.52595994
1976	62158904.34610276
1977	66316838.803201504
1978	81940262.48642513
1979	89318557.0717007
1980	93714701.83189283
1981	85378412.19286455
1982	77904786.55316398
1983	112578914.79995346
1984	102527329.33475834
1985	102835097.27019273
1986	147557404.33463705
1987	137753623.80035478
1988	134632329.9653506
1989	136673557.19795865
1990	367734446.14512545
1991	317770812.5539031
1992	333054058.5954908
1993	302263089.99678946
1994	174631138.7467083
1995	220898996.48406386
1996	229165765.08101037
1997	217365815.7961388
1998	242271563.63755324
1999	244485299.55762553
2000	207287999.52636972
2001	217193772.89190888
2002	244126231.28490528
2003	309370219.55327666
2004	353143669.90317893
2005	368844511.43357205
2006	386426247.94677716
2007	440319065.86238456
2008	519024572.2421357
2009	545880503.4149925
2010	543083116.836953
2011	586136352.5758057
2012	708581062.4096102
2013	819428142.9540023
2014	921525730.6661148
2015	738468134.9792913
2016	777149234.402715
2017	846464819.7063067
2018	947697333.0523967
2019	946902686.7395647
2020	1015728268.6190398
2021	1139424646.6167088
2022	1079422089.8217342
2023	1206951055.1750507