Year	constant 2010 US$
1980	21040115608.5014
1981	21992658860.1597
1982	23153595031.8126
1983	23687921551.374
1984	24909106606.2001
1985	24882143630.7026
1986	25355873426.2894
1987	26804986598.0777
1988	28563378028.9698
1989	27473256260.999
1990	29038220928.6585
1991	21764179639.9079
1992	21241839379.9919
1993	20625825978.0696
1994	19718289698.1183
1995	19146459320.4278
1996	19698862867.1991
1997	16261540544.1993
1998	15965344524.1641
1999	17130161093.8135
2000	18495600379.0443
2001	19923717341.2752
2002	21083051306.349
2003	22431568972.5193
2004	24548801949.3705
2005	26380601055.909
2006	28653986733.4507
2007	32273656423.4466
2008	33356843102.7481
2009	31846216325.9781
2010	32291728712.6032
2011	32924191146.6089
2012	33908217138.2158
2013	33071612291.8641
2014	33978881819.4125
2015	35506227155.8143
2016	36767496954.1086
2017	38430012183.5657
2018	40876066062.0008