Year	constant 2010 US$
1981	634986317.817536
1982	715957730.223817
1983	731406226.912478
1984	712228753.731769
1985	775088155.151392
1986	810246762.017596
1987	705836309.660221
1988	722350174.295365
1989	777971142.853816
1990	909874677.852382
1991	819999314.107616
1992	802426325.077325
1993	795765118.113056
1994	810507603.398572
1995	812455320.4631
1996	829606586.777545
1997	866401525.071548
1998	911114596.347026
1999	937198908.349361
2000	784157312.528029
2001	633988989.24605
2002	564302179.587377
2003	591299019.235788
2004	687258974.778054
2005	764749257.772771
2006	814695756.545637
2007	932348484.028979
2008	975913462.45815
2009	1011372069.5749
2010	843510498.619004
2011	840840175.431641
2012	1017847687.82494
2013	1213047653.08819
2014	1379003920.52196
2015	1526800370.53516
2016	1621675012.50125
2017	1650982307.61669
2018	1724773170.49554