Year	constant 2010 US$
1964	371.16612781058
1965	444.128297591654
1966	426.70208967495
1967	487.071949791695
1968	548.710521600176
1969	521.695398094578
1970	592.804987902424
1971	576.307997548307
1972	505.375821273232
1973	521.277390256423
1974	734.704531420693
1975	730.876405842322
1976	726.152124819581
1977	598.171209759217
1978	505.906319932737
1979	524.664797090324
1980	547.624943440953
1981	627.86658033167
1982	797.47927537919
1983	636.790726376412
1984	560.850926773878
1985	503.982240607377
1986	627.776524282733
1987	573.870599758853
1988	488.672117538505
1989	568.310867733967
1990	601.695065600339
1991	558.078385511161
1992	517.682274646231
1993	492.278707576164
1994	536.013994740626
1995	516.333547102257
1996	568.007168202242
1997	526.408457999377
1998	578.256813107348
1999	589.887028569345
2000	586.596455725153
2001	571.669818195288
2002	577.743382101297
2003	586.677040697578
2004	574.40728547564
2005	589.630732738016
2006	596.611601646799
2007	611.743234811256
2008	638.057437262265
2009	635.900974348539
2010	637.571066418459
2011	637.511142715743
2012	672.467508352587
2013	668.587537211544
2014	669.824383924067
2015	663.019375884667
2016	674.192632112243
2017	688.062759499261
2018	706.072482383766