Year	current US$
1970	986397132.937619
1971	1169070975.187536
1972	1411035488.5755956
1973	1856129122.02588
1974	2275234418.0915613
1975	2241924553.8739552
1976	2215510522.213562
1977	2697738718.277871
1978	3471989966.555184
1979	3826505058.5996194
1980	4544489480.795214
1981	4685704770.626925
1982	4623452294.246177
1983	4443349106.203996
1984	3828165508.6591306
1985	4408695652.173913
1986	5424588086.185044
1987	7083874961.312287
1988	7947826086.956522
1989	7818547671.184234
1990	8392398254.945317
1991	7991222147.19784
1992	7853041259.038707
1993	8294342127.09474
1994	9289333903.168692
1995	10739240170.031881
1996	11666435410.018038
1997	11123368845.741663
1998	9866308753.092268
1999	10152057709.273964
2000	8993544987.48518
2001	9103047045.035994
2002	11166642022.770958
2003	14832661536.582388
2004	17736470588.235294
2005	20589312117.158348
2006	20479865118.99358
2007	25281840229.293747
2008	26342869192.380684
2009	24007120994.440628
2010	28865847770.07316
2011	32958324738.15113
2012	34155844022.37431
2013	35783758128.72155
2014	37797196029.090614
2015	32939207447.828587
2016	34270896782.165295
2017	37016265120.878296
2018	38627004399.44425
2019	40156139339.53718
2020	43537263506.02914
2021	53514641391.99321
2022	52083989390.36902