Year	constant 2010 US$
1970	39916224485.1426
1971	41128371520.3463
1972	45158075833.9525
1973	49389389733.3176
1974	49929504462.8118
1975	43806544382.3341
1976	49240049220.9377
1977	54466083630.6785
1978	49110997434.361
1979	57135831696.2575
1980	56477908484.2807
1981	53071474214.0803
1982	49382626294.9467
1983	47830189189.1679
1984	50322929647.9179
1985	53553428565.3291
1986	53631269493.6674
1987	55425494852.6077
1988	61168496363.4083
1989	65357270543.8925
1990	69038209397.5006
1991	72352131824.7757
1992	71759764709.6506
1993	69758944233.9707
1994	73929230111.2576
1995	78678957912.9585
1996	79279743334.8126
1997	80679885137.2496
1998	82970583188.3284
1999	85806679230.4999
2000	87956299588.4966
2001	87206225041.9316
2002	83866702019.6865
2003	87764986475.7882
2004	89225786918.3224
2005	90621770027.9667
2006	92638603589.9776
2007	99548933877.2666
2008	99010965907.3735
2009	88756675775.9109
2010	88598513007.3429
2011	96400194197.9474
2012	95723135171.6567
2013	95019865785.3763
2014	95688249831.4785
2015	98756239351.6987
2016	102905277090.106
2017	108665238783.167
2018	111971426041.847