Year	constant 2010 US$
1991	161580745139.99
1992	163615417682.876
1993	162476364977.37
1994	165333029649.078
1995	170551450958.901
1996	173011862635.55
1997	180183539296.528
1998	187967178320.458
1999	194887666084.811
2000	199779913969.959
2001	212785403619.091
2002	228408955533.326
2003	240845392219.173
2004	271602093790.247
2005	295148984549.147
2006	325734786111.816
2007	359081517441.704
2008	390545940358.801
2009	423058879365.79
2010	461916095874.666
2011	488008609502.698
2012	516075068274.833
2013	556123052363.387
2014	581755905272.097
2015	597458411792.837
2016	603448591124.437
2017	613426727235.292
2018	631735333795.758