Year	constant 2010 US$
1970	17760.7420276376
1971	18251.7493313106
1972	19018.0446699709
1973	20068.6673081711
1974	20580.6329716345
1975	20282.6527225365
1976	21214.4236247027
1977	21757.7446001968
1978	22351.361549445
1979	23139.0553245076
1980	23533.3017667215
1981	23479.5616391403
1982	23545.8038013036
1983	23819.1221266309
1984	24351.4275156334
1985	24899.9855968658
1986	25476.9986344807
1987	26095.6983305054
1988	27155.6875072775
1989	28143.2327323766
1990	28964.9639414091
1991	29547.6976860016
1992	29795.2749064713
1993	29500.188679511
1994	30011.2006485407
1995	30713.5433939223
1996	31212.4049256106
1997	31994.5422121968
1998	32801.0327770639
1999	33750.8037270228
2000	34923.5225231722
2001	35449.6887182851
2002	35515.6111153988
2003	35645.5528215091
2004	36456.5984192735
2005	36872.291507464
2006	38029.3935363526
2007	38875.6798717352
2008	38707.1310060569
2009	37056.1785612402
2010	37809.1872106659
2011	38523.0872124901
2012	38156.9310768494
2013	37941.4156516863
2014	38262.6504311595
2015	38777.3476472209
2016	39467.6003672152
2017	40458.0656028968