Year	constant 2010 US$
1960	760.833254024597
1961	736.936241732817
1962	738.276859784636
1963	737.357259778762
1964	741.153561161094
1965	717.610105538404
1966	713.006980571429
1967	698.496590197203
1968	734.449488003041
1969	743.246639792111
1970	771.362921286661
1971	789.810926582325
1972	754.274841948791
1973	713.781342991609
1974	672.919856931271
1975	655.794225141585
1976	603.886931732169
1977	613.713237917308
1978	583.338316538337
1979	634.198824329878
1980	623.247959883906
1981	524.283174239964
1982	512.441311565125
1983	494.097014098581
1984	475.823411269376
1985	477.551516278544
1986	461.296009098547
1987	434.475825958905
1988	425.861609064167
1989	396.853141424066
1990	420.562264462416
1991	407.915413668795
1992	385.833740942577
1993	386.340433022634
1994	376.859260368991
1995	371.087210097675
1996	364.529737739896
1997	370.411494939595
1998	374.968009346147
1999	379.24261159381
2000	382.71146842405
2001	381.16977915487
2002	368.701221087473
2003	380.689324506044
2004	403.162432780559
2005	373.361337458835
2006	367.97874129539
2007	358.567090630049
2008	374.994380739279
2009	364.998329259086
2010	357.678810383367
2011	353.525249696161
2012	355.366361114448
2013	350.089224676458
2014	339.990650501756
2015	331.953079908256
2016	324.748037420246