Year	current US$
1970	236599899.3
1971	283822326.7
1972	279514373.8
1973	423839386
1974	653045936.874
1975	1030562376.5609999
1976	1095128180.3414001
1977	1483374111.5132
1978	1926461314.3934999
1979	2596327524.6219006
1980	3345337851.2004
1981	2907844312.4198
1982	2626602300.3241005
1983	2699316580.0659995
1984	2359137352.3816996
1985	2168038809.7323
1986	2527321994.3005996
1987	2638610458.0828996
1988	2627316265.1369004
1989	2480244534.6048
1990	2774731254.389053
1991	2407784295.2656107
1992	2431975334.7705426
1993	2200695203.088984
1994	1875977404.8563955
1995	1992556402.8315208
1996	1868278902.9862657
1997	2035825714.3973284
1998	2102999370.7626457
1999	2398449127.7599096
2000	2406246537.747666
2001	2210345272.416864
2002	2386073699.0947466
2003	2743501146.6647058
2004	2964868430.6808996
2005	3292221488.3857727
2006	3485918055.2316446
2007	4129462840.707687
2008	4558951917.503966
2009	4864444692.573062
2010	5360464269.73502
2011	6314542995.87117
2012	8099422487.777242
2013	8678041151.978374
2014	9360727699.65603
2015	11136156029.77398
2016	9348895085.954208
2017	8556787746.330494
2018	8994632970.209623
2019	8493257463.770838
2020	8765209878.718414
2021	8739589842.07771
2022	7871255906.666298