Year	constant 2010 US$
1980	26521449164.1151
1981	25354505077.5016
1982	25354505077.5016
1983	26419394652.9057
1984	28004558903.8942
1985	28984718322.577
1986	29825275659.0343
1987	31042966694.3324
1988	32945556123.5913
1989	32959268545.6627
1990	31822141255.443
1991	32137613012.7029
1992	30261328944.0939
1993	23003628099.9176
1994	23311730283.7517
1995	26808489833.043
1996	30439530821.7894
1997	32653786719.2065
1998	34185623675.9806
1999	34931379541.6446
2000	35998401926.5017
2001	37512494191.7837
2002	42638834055.0001
2003	43913671239.4261
2004	48723474947.8463
2005	56046084737.5161
2006	62518109036.7694
2007	71276907517.7698
2008	79235785608.8078
2009	79916193295.5028
2010	83799496611.2004
2011	86708999523.6243
2012	94115810017.4361
2013	98778862978.4373
2014	103542597661.716
2015	104519600362.38
2016	101822893037.816
2017	101673002177.645
2018	99503815532.2356