Year	constant 2010 US$
1966	414.934863663656
1967	404.089518727626
1968	430.697521443301
1969	428.843190089342
1970	442.312010317569
1971	429.349362880389
1972	417.879983297434
1973	443.034398249235
1974	454.89819752767
1975	495.436882597602
1976	514.860778842763
1977	515.06978008357
1978	529.447300091851
1979	505.278347146548
1980	519.704417652564
1981	520.364846417038
1982	500.749489920962
1983	537.733334112609
1984	537.184137852407
1985	511.605576439913
1986	508.734250500436
1987	496.209926418897
1988	493.245804573631
1989	498.258247128858
1990	494.414573258038
1991	490.734205703888
1992	490.131139433635
1993	489.004562638772
1994	474.832167620337
1995	464.434217551333
1996	460.276332374647
1997	468.17636936583
1998	469.847489824606
1999	484.648532301192
2000	495.561950666174
2001	507.97064968987
2002	475.997088050086
2003	492.677126484728
2004	510.987236920966
2005	490.6944510009
2006	481.336305389177
2007	484.090383901957
2008	496.871885204373
2009	513.420132965245
2010	530.787693425107
2011	492.885645007982
2012	504.949713709538
2013	513.314364137075
2014	493.331402797323
2015	506.802617887505
2016	493.875430300232
2017	501.281015066687
2018	518.849006535882