Year	constant 2010 US$
1975	7403.37768577164
1976	8973.43638847736
1977	10575.0784137875
1978	11339.1592249023
1979	12310.2829325492
1980	12910.0236830255
1981	12978.566954893
1982	13583.0378988259
1983	14052.9718805286
1984	15120.0832083777
1985	15691.2187376347
1986	16059.3001239343
1987	17216.6398583571
1988	18503.9853493229
1989	19751.1025618549
1990	20767.6991517998
1991	20383.3398655215
1992	21634.851193335
1993	21284.4694213842
1994	22014.9939795698
1995	22040.3728941619
1996	22011.3893629804
1997	22126.1814497777
1998	25250.5177437476
1999	23996.5227814526
2000	24404.7109189351
2001	25468.4757996224
2002	26699.6523587943
2003	27353.9983367868
2004	27871.6188737956
2005	28964.7027661194
2006	29730.2217638168
2007	30299.0674948903
2008	32054.7012980439
2009	29695.8618551597
2010	29880.8717341741
2011	30120.1205388514
2012	27914.8724017576
2013	26105.6090675863
2014	26270.3220222494
2015	28223.0876209083
2016	28496.8591721914
2017	29279.2234976601
2018	30079.8082279245