Year	constant 2010 US$
1981	4828041822.80615
1982	4676412817.26559
1983	5333677493.89537
1984	4672851941.71377
1985	3713598078.89869
1986	4327025098.5441
1987	5079120648.1622
1988	5005854381.24352
1989	5052725685.98395
1990	5326848377.64395
1991	5458539858.97446
1992	5373034778.15608
1993	5726953044.28265
1994	5579207917.53112
1995	5789359762.43971
1996	6771350267.04888
1997	6906922663.3045
1998	6241072705.35458
1999	6453129767.00625
2000	6650154318.97726
2001	7290185564.59632
2002	7153454683.90721
2003	6403423195.4429
2004	7488471819.00091
2005	8502630914.97351
2006	9430164338.65652
2007	10321156148.1298
2008	11095394892.4254
2009	11801168560.0221
2010	12406604219.9984
2011	13525057706.6897
2012	14190774399.3424
2013	15198100508.7656
2014	16025899900.6427
2015	17047998114.1905
2016	17718867018.8263
2017	18904784572.6544
2018	19567847615.2175