Year	constant 2010 US$
1976	7043994505.02949
1977	7285576523.10733
1978	7065219612.91449
1979	7047677954.78477
1980	6819475523.02009
1981	7074569570.80109
1982	6552661470.38982
1983	6469627124.04683
1984	6446690431.98486
1985	6702530250.77113
1986	6442482019.22384
1987	6704286251.60441
1988	6820930928.97978
1989	6980981963.13741
1990	7298849733.86648
1991	7692615747.90135
1992	7818125836.18802
1993	8027826555.15691
1994	8450848340.48249
1995	8938395806.27823
1996	9421574799.63597
1997	9994103014.80682
1998	10652900439.1261
1999	10496781952.5242
2000	10391539456.8553
2001	10696289334.9345
2002	11098550748.9258
2003	11404268437.7884
2004	11841290143.709
2005	11987973390.1769
2006	12596785800.9167
2007	12823129889.5155
2008	14308444004.4553
2009	14655602224.8389
2010	15531814313.5111
2011	16189793611.5305
2012	16579656136.5235
2013	17358707370.7894
2014	17845062532.1857
2015	18639255706.0918
2016	19639574835.9027
2017	20345508795.2444