Year	constant 2010 US$
1968	30713891240.8981
1969	31014414607.1642
1970	32925467224.9235
1971	34456311051.8273
1972	35313257384.3984
1973	34193338139.6678
1974	36595860664.2833
1975	36220771314.0567
1976	40038201227.1186
1977	42050340494.0188
1978	41342402570.9845
1979	40064084110.574
1980	41475480447.099
1981	42264722030.1761
1982	46338085947.4059
1983	45556231201.7734
1984	47524941284.2506
1985	50259871991.4551
1986	54926061634.5079
1987	55978784552.2328
1988	58623687587.4383
1989	64358963606.7429
1990	63627499787.684
1991	65615038076.096
1992	67766487610.5041
1993	68099790976.8032
1994	71799396602.7399
1995	70326155868.5227
1996	79340314160.0592
1997	79891984229.0619
1998	84774406094.26
1999	86569956466.2374
2000	84955564341.8729
2001	88959012333.8009
2002	91926860202.0161
2003	94234971378.3859
2004	97954154150.1864
2005	100602479316.972
2006	106942288539.42
2007	103375081680.92
2008	105586741117.592
2009	112345179400.891
2010	116917318102.694
2011	124122289567.092
2012	128504159791.705
2013	135863888861.978
2014	137033242716.922
2015	138693729623.724
2016	139097682888.332
2017	143481796605.214
2018	146195676878.506