Year	constant 2010 US$
1967	383.998407924115
1968	389.277425801038
1969	383.800894961526
1970	397.436817654639
1971	399.688008146375
1972	416.40122190535
1973	407.547769611223
1974	431.317725948045
1975	451.495592286723
1976	493.422642710086
1977	481.153887141003
1978	498.684818182252
1979	526.486987035954
1980	488.005687184299
1981	502.448376056184
1982	463.735278918937
1983	469.448166769806
1984	465.916271901545
1985	442.48027764186
1986	409.48445261364
1987	373.42849150161
1988	401.952376828446
1989	384.726594223078
1990	378.712110361385
1991	444.34967669639
1992	397.867708380928
1993	417.954145395509
1994	403.057187898101
1995	402.967513705072
1996	418.782914752783
1997	398.821736461107
1998	393.504847833272
1999	419.951251439052
2000	401.364322629408
2001	417.872802335286
2002	396.824938838892
2003	414.777808911271
2004	419.882203764743
2005	434.034676327428
2006	439.155035686137
2007	449.623673466201
2008	469.800440822614
2009	480.657357579819
2010	515.139237582478
2011	510.685156423386
2012	501.685830218918
2013	500.238235798589
2014	522.554013277057
2015	537.046898542195
2016	541.530670474494
2017	575.755911486877
2018	604.061573638883