Year	constant 2010 US$
1970	25250.0411604829
1971	25632.9202005351
1972	26580.119126845
1973	28278.6427314003
1974	26614.5398591514
1975	26783.9515146485
1976	28439.0618356882
1977	29085.6896947329
1978	30181.9407506141
1979	30544.0797426269
1980	29413.3597867353
1981	28575.3670774661
1982	29273.4174849826
1983	30202.5199036883
1984	31270.3108096399
1985	32508.7897536207
1986	34828.4021818134
1987	34942.1288183059
1988	34573.995811354
1989	34332.9360518121
1990	34952.8452293615
1991	34893.1531066948
1992	35945.4191957582
1993	36020.8984592001
1994	37832.7907227663
1995	38885.8165540669
1996	39837.0540220286
1997	40783.0282420181
1998	41712.4512701195
1999	42550.5219797934
2000	43546.1101355467
2001	43694.5640253422
2002	44110.8352114587
2003	44296.862417367
2004	45902.5290382182
2005	47709.5829618119
2006	49383.2543461982
2007	48927.7981388557
2008	48346.8515422612
2009	46034.8908780093
2010	47972.2234671855
2011	48167.2404143544
2012	48519.3962619595
2013	49730.4503024204
2014	51393.9151593693
2015	52203.5527877836
2016	52172.9794525229
2017	53182.5630062816