Year	constant 2010 US$
1970	13463.7468841834
1971	13816.3704226393
1972	14393.9755367406
1973	15088.8657204526
1974	14895.8564013528
1975	14765.1492799642
1976	15310.8900784844
1977	15605.9497487641
1978	16187.1154755316
1979	16581.0974644763
1980	16470.8891652386
1981	16201.2975233194
1982	16297.9452934812
1983	16562.6522336507
1984	16933.0467883183
1985	17333.2923624028
1986	18182.0049856181
1987	18762.0023129484
1988	19548.2510586819
1989	20120.7636894187
1990	20661.2619954478
1991	20947.6707716398
1992	21212.3325742065
1993	21111.3372337494
1994	21693.5151738698
1995	22253.2305416324
1996	22660.5458316033
1997	23359.3835832383
1998	24228.6996502663
1999	24898.1385347817
2000	25581.6739426121
2001	26044.0297599616
2002	26351.99588805
2003	26671.5200725796
2004	27369.1087384312
2005	27770.3874009279
2006	28461.5203133174
2007	29189.1854019514
2008	28806.2255893514
2009	27572.400657558
2010	28068.76932753
2011	28393.4320223641
2012	28076.6030998234
2013	28114.7097849124
2014	28631.8327468419
2015	29382.7967145768
2016	30008.6970502087
2017	30699.6686978434