Year	constant 2010 US$
1981	1440.62457057807
1982	1521.95119459128
1983	1570.55459325077
1984	1621.17341847515
1985	1668.49738977156
1986	1774.65934759129
1987	1784.53886706285
1988	1825.09496808893
1989	1855.79696808427
1990	1761.2173863106
1991	1583.61870874298
1992	1420.64804436412
1993	1363.66190325556
1994	1382.20623168305
1995	1459.11834753303
1996	1479.7872110563
1997	1524.83464340191
1998	1562.43147331189
1999	1596.46938212341
2000	1600.4915005161
2001	1632.65152059909
2002	1693.35000478825
2003	1793.25370917456
2004	1961.83840034669
2005	2079.13047522721
2006	2228.41928205623
2007	2423.67120861002
2008	2601.20051595729
2009	2527.95836109812
2010	2643.29291416763
2011	3043.86182588884
2012	3353.09360670119
2013	3669.52401258449
2014	3880.3513875279
2015	3895.41336222074
2016	3866.24397326285
2017	3996.14362089866
2018	4197.75598197952