Year	current US$
1970	653656078.0635316
1971	740089853.881149
1972	796272122.8863727
1973	1001769051.9962538
1974	1192663862.6640432
1975	1353192140.656986
1976	1582882800.3298817
1977	1840706302.2447639
1978	1967457032.2186825
1979	2008451649.8489368
1980	2336613216.7152576
1981	2301768446.7288094
1982	2141772544.1586614
1983	1823913162.6555562
1984	1905777124.3031304
1985	1870609035.4999301
1986	2462033618.672833
1987	3012096474.953618
1988	3144545036.0595365
1989	2981678615.3957567
1990	3574612201.8627095
1991	3547332212.435793
1992	3438088341.7813177
1993	3146417445.482866
1994	3310048741.781909
1995	3936892284.3793406
1996	3641818350.956619
1997	3326830095.852065
1998	3490609799.7375784
1999	3329828700.379526
2000	3059033379.536004
2001	2691593358.319339
2002	2887472131.0654078
2003	2882263212.9035907
2004	3542902919.5347733
2005	4214202561.1175785
2006	4737342709.681443
2007	4832898305.952198
2008	5032978723.404256
2009	4795731755.800455
2010	6572618226.940573
2011	6541939157.04941
2012	5524022346.368715
2013	6591148936.170213
2014	6941179582.121128
2015	5751865247.494056
2016	7544880952.380952
2017	7708603667.136809
2018	7965447279.434368
2019	7285681818.181818
2020	6778900787.680328
2021	8048195576.251455
2022	9820507931.004591
2023	10274218996.528906