Year	current US$
1970	4136835178.988926
1971	4608767131.053445
1972	5538842172.368781
1973	7394984217.28121
1974	9179738975.03475
1975	10410185769.767933
1976	10973151287.455328
1977	12039635578.097116
1978	14096293611.582703
1979	16434509587.093462
1980	22110868156.786526
1981	22241135987.455357
1982	21186396033.467617
1983	21054629680.390327
1984	22508730012.86528
1985	22712511050.109337
1986	23219873693.320892
1987	27591391465.67718
1988	30363203928.187817
1989	31682815555.07278
1990	36937393165.80667
1991	36442949914.39017
1992	36787191246.27886
1993	34114545890.246826
1994	36705820675.58377
1995	45827598181.588585
1996	51613693447.85885
1997	53436961008.85005
1998	46482750394.29564
1999	51711842240.22977
2000	66407553000.52262
2001	65099591845.81336
2002	66123149377.48942
2003	74440552526.76479
2004	92997567054.35556
2005	120386185487.0004
2006	143428967926.02872
2007	165276796833.68307
2008	201932269503.5461
2009	141423437176.9795
2010	159703405487.38443
2011	196382001406.55914
2012	204842801890.8466
2013	205553021276.59573
2014	188291298598.25433
2015	130566497881.57481
2016	113089285714.2857
2017	128191335885.55304
2018	150257116507.8389
2019	130787499999.99998
2020	111829825648.2875
2021	201034807916.1816
2022	296916633440.23566
2023	196887283054.59195