Year	constant 2015 US$
1970	8103709799971.635
1971	8460333986436.204
1972	8965492850298.416
1973	9460255953877.443
1974	9519121214369.496
1975	9746491151554.78
1976	10180613301132.252
1977	10537770956471.152
1978	10950343221807.396
1979	11325763999898.484
1980	11423162041547.176
1981	11567063945036.867
1982	11756532314470.588
1983	12165160592090.395
1984	12578031012243.389
1985	13062790455319.61
1986	13602599638419.188
1987	14112546035301.258
1988	14718241945669.021
1989	15233582018019.383
1990	15651118821358.14
1991	15814023078097.812
1992	16235869828500.111
1993	16522649913254.514
1994	17015763151207.834
1995	17455397009842.787
1996	17966633900402.562
1997	18492709100076.137
1998	19096030944648.918
1999	19899229467362.594
2000	20696200765328.965
2001	21192749759332.266
2002	21641890421868.79
2003	22133338288767.594
2004	22766198639046.668
2005	23433298822636.594
2006	24010413872926.664
2007	24599293331254.664
2008	24681347136981.316
2009	24394042756569.445
2010	24869050064898.836
2011	25161041284252.555
2012	25411613025018.895
2013	25765320194972.145
2014	26244015373965.652
2015	26896421011486.99
2016	27474584401578.176
2017	28107032808647.152
2018	28721944528881.465
2019	29158143228383.85
2020	27704343888714.105
2021	29397040355539.883
2022	30301771472773.72