Year	constant 2010 US$
1981	201224629763.877
1982	163260338817.091
1983	128158734367.879
1984	120374037856.087
1985	118162349540.37
1986	106821422642.008
1987	97360215353.8959
1988	106838305151.339
1989	113048458650.571
1990	115990767286.891
1991	125810143901.473
1992	120686602794.495
1993	131468041077.21
1994	135339802848.752
1995	143350925809.576
1996	164553106449.274
1997	187634753201.64
1998	191961132407.93
1999	172246104821.979
2000	181982396216.484
2001	213129395461.055
2002	236620645487.775
2003	281065473369.074
2004	274115531889.366
2005	314093884324.369
2006	365598828552.884
2007	420272248224.737
2008	422660287428.721
2009	390234524428.298
2010	407193992783.771
2011	436788982024.9
2012	442075852490.53
2013	470063221890.561
2014	479604994730.482
2015	475011386197.105
2016	459611129464.413
2017	463830242480.958