Year	constant 2010 US$
1980	2203.54056555678
1981	2946.22140602735
1982	2938.52861574556
1983	2737.25141061627
1984	2760.70485554147
1985	2306.40624933005
1986	2404.77148915471
1987	2747.93913022901
1988	2477.81310103646
1989	2459.98801615333
1990	1966.47322586556
1991	2186.28976306715
1992	2055.11578211996
1993	2000.5440848329
1994	1966.52704891084
1995	1981.61564436556
1996	2146.34152070183
1997	2259.50681895635
1998	2296.78387983577
1999	2285.22920804086
2000	2376.41944368462
2001	2548.99370699334
2002	2473.90021341331
2003	2640.0413781747
2004	2649.87400721125
2005	2628.64653779186
2006	2809.43888653683
2007	2928.86212614856
2008	3243.75532111252
2009	3628.00221850747
2010	3366.2460946952
2011	3600.72881333239
2012	3877.79409570165
2013	4170.83642332429
2014	4378.97612985236
2015	4852.49344241146
2016	5109.44690441385
2017	4847.91831373325
2018	4876.10375971741
