Year	constant 2010 US$
1978	3566.83341207823
1979	3398.18671456527
1980	2777.31152475474
1981	2672.29002481481
1982	3043.0875079861
1983	3115.46070264788
1984	2962.07104426971
1985	2957.46773696175
1986	2771.69875487038
1987	2761.29892530157
1988	2639.12009067469
1989	2685.05008546215
1990	2784.24918790219
1991	2913.85909752305
1992	2941.73034332368
1993	2910.33869232885
1994	2864.14477114413
1995	2891.76192800523
1996	2967.94551375955
1997	2977.83427701081
1998	3058.28735740562
1999	3057.95622864679
2000	3153.03772986769
2001	3186.09539978334
2002	3283.93779385795
2003	3432.08593868495
2004	3535.39918673867
2005	3601.63970736848
2006	3732.53674338829
2007	3950.36275733677
2008	4002.47209006748
2009	4016.27465576684
2010	4131.39513504229
2011	4148.41324957528
2012	4004.19755489147
2013	3989.57114264699
2014	4055.1851164073
2015	4050.55009094293
2016	4305.93765349866
2017	4364.9535007007