Year	constant 2010 US$
1980	13271014418.6806
1981	14508867612.168
1982	12867105596.1834
1983	15067246155.2973
1984	13911839657.1657
1985	16669565883.6212
1986	15242951125.525
1987	18984468884.3535
1988	21744042875.5461
1989	19744934165.1925
1990	18548767055.8797
1991	19299867413.7
1992	14108203055.4538
1993	14192852326.4464
1994	13752873882.7347
1995	14302988824.5068
1996	20407500539.7029
1997	18908698820.4283
1998	20626829990.6231
1999	17941965488.7682
2000	18709599750.2336
2001	19447045370.9945
2002	21180155219.7212
2003	21930374168.2443
2004	23124271760.2989
2005	25344313677.6692
2006	27362081028.2098
2007	29999601965.1113
2008	27927628890.3964
2009	28153068913.3129
2010	29856775416.2718
2011	30276903469.4128
2012	30130390461.046
2013	29989015577.4806
2014	30521253586.6355
2015	31549855867.5048
2016	32519954961.6219
2017	33781830585.7864
2018	35130133258.1814