Year	constant 2010 US$
1980	27345612833.3559
1981	29036258697.7122
1982	30505725125.22
1983	31709802896.9812
1984	32832527142.277
1985	33667084337.3494
1986	34669074793.5562
1987	36639658386.3544
1988	38406285907.6757
1989	37278298429.6738
1990	39410136049.8172
1991	30785288073.6429
1992	29831525450.1151
1993	28768867063.7607
1994	27479374035.4677
1995	26682472180.8583
1996	25324353594.1519
1997	21222011642.0739
1998	22822729118.7221
1999	23721334777.3115
2000	25326113442.5342
2001	26883240828.4825
2002	28123866251.5229
2003	30016312440.7743
2004	32520441315.8251
2005	34455326925.6802
2006	37200284283.2002
2007	40799580343.8473
2008	42045485312.0347
2009	40019290645.729
2010	40630634899.1471
2011	41444564775.9577
2012	42265466359.8213
2013	41475294436.1716
2014	42384797617.436
2015	44005956409.9093
2016	45445377013.6726
2017	47420333017.4631
2018	50279206714.4984