Year	constant 2010 US$
1970	19624.7497590296
1971	20202.4337430061
1972	20970.6264326325
1973	21903.4035074806
1974	22089.7489661836
1975	21980.0878897735
1976	23167.0592614971
1977	23996.7729121627
1978	24740.2365269267
1979	25755.6578068766
1980	26064.3893139114
1981	26162.4546274364
1982	26083.9521450124
1983	26563.6449361396
1984	27408.0998134019
1985	28108.8930128788
1986	28738.6826117652
1987	29096.9101849167
1988	30057.941478281
1989	30988.589460293
1990	32337.1010226197
1991	33742.2192171049
1992	34130.852397553
1993	33583.0060357251
1994	34289.1247492873
1995	34782.5686253047
1996	34965.6908864708
1997	35560.2092859448
1998	36258.6744317081
1999	36955.2896071002
2000	37998.4253119991
2001	38577.7256293297
2002	38512.9200411024
2003	38218.3496455934
2004	38673.8881132052
2005	38969.3216980632
2006	40456.8573802769
2007	41831.8670883098
2008	42365.0974955812
2009	40086.1047594417
2010	41785.556912554
2011	44125.3314116503
2012	44259.2599053983
2013	44354.7368865267
2014	45132.2736332789
2015	45521.3192823697
2016	46167.8307842585
2017	46987.787982009
2018	47501.812652083