Year	constant 2010 US$
1976	2421.07500923094
1977	2508.98394871813
1978	2561.3150296967
1979	2590.97795348302
1980	2278.32152262956
1981	2337.91349117504
1982	2431.35408269491
1983	2425.01807319264
1984	2498.66034914329
1985	2654.03795508022
1986	2898.98143270493
1987	3175.50384455646
1988	3373.5782520904
1989	3538.61677764265
1990	3768.54227873053
1991	3933.02712646012
1992	4140.12822035091
1993	4289.4622723074
1994	4371.18531780699
1995	4528.73325424265
1996	4708.52344865789
1997	4942.60993358945
1998	5176.72787839246
1999	5257.94572716612
2000	5635.26472546549
2001	5814.56488447429
2002	5866.78209330787
2003	6122.27501008186
2004	6365.88602056736
2005	6446.71270543369
2006	6784.03124460375
2007	7278.78074226769
2008	7562.37513102121
2009	7710.57838078707
2010	7927.73949710867
2011	8160.81544221403
2012	8835.39740134156
2013	9423.05447882257
2014	9754.96350564549
2015	10139.9886921949
2016	10494.2405910715
2017	11033.0618734493
2018	11414.0196568075