Year	constant 2010 US$
1980	871003991.710784
1981	790168055.331755
1982	651634523.104653
1983	493985651.056946
1984	423716124.238098
1985	426760149.087359
1986	398278453.592164
1987	417199610.778083
1988	470424533.618815
1989	514848551.590205
1990	621950393.283683
1991	481103118.911885
1992	672373558.294657
1993	709609520.624918
1994	757685114.160433
1995	872296063.78264
1996	1023718427.80409
1997	887548223.432466
1998	1103570577.55897
1999	1149898902.71139
2000	1046320380.57674
2001	1415516246.25367
2002	1404561224.11729
2003	1334445471.01429
2004	1417463864.32636
2005	1468410544.85768
2006	1905817721.55135
2007	2137272588.29342
2008	2521884056.78801
2009	2887144337.73877
2010	2852569701.68825
2011	2728112031.95883
2012	3579326290.09212
2013	4062869897.14757
2014	5430392339.74447
2015	5861494333.59355
2016	4187906508.48509
2017	3176309733.74657
2018	2727855520.44926