Year	constant 2010 US$
1971	5302920830.36132
1972	5325730583.49397
1973	5077730288.19359
1974	5646994498.90331
1975	6253507962.64291
1976	5809485337.82409
1977	6131355819.07034
1978	8861224775.74499
1979	8848751530.06068
1980	7698354798.35647
1981	10179889545.4364
1982	13194320346.4293
1983	13203931784.1979
1984	13726910013.1971
1985	14546042500.5427
1986	17941109659.8392
1987	16170052244.1226
1988	14293706073.3448
1989	11819540584.8303
1990	11285879991.7383
1991	11669665201.4585
1992	9912262379.39771
1993	10900587559.4121
1994	11268344597.3738
1995	11245587578.885
1996	11363889181.14
1997	12193485218.1302
1998	13220083531.6498
1999	13745076289.9836
2000	13763841670.9144
2001	14748287082.2381
2002	15665000102.035
2003	16467193062.2491
2004	18016495439.5807
2005	18030042146.8996
2006	18649890668.1815
2007	19180188743.1608
2008	19594256243.9264
2009	21295726038.3961
2010	21558453450.0555
2011	22426520052.1238
2012	23257288156.7139
2013	24714335483.3397
2014	26848561217.8508
2015	28260087738.7039
2016	29629351259.3185
2017	30532580511.9504