Year	constant 2010 US$
1970	25454.505532119
1971	25513.2122340442
1972	26042.0835227999
1973	26971.3988332454
1974	26915.1536663008
1975	28120.683747097
1976	28253.9917123683
1977	27151.4022739564
1978	27366.5802695002
1979	27942.4739591477
1980	28251.997407554
1981	28173.1354070864
1982	28165.0085407818
1983	28251.6968885361
1984	29711.1000678763
1985	30253.4216597433
1986	31800.1247294365
1987	32829.6534524671
1988	33293.3330987604
1989	33762.8915988689
1990	33294.2388131734
1991	32924.5632185655
1992	31813.1713979071
1993	30277.4529394932
1994	31959.6292862997
1995	33774.5010364839
1996	33903.6633935472
1997	34697.8297003306
1998	36198.373338495
1999	37324.4335711367
2000	38749.6542780659
2001	38766.5263741555
2002	39195.6918541996
2003	40739.3733668848
2004	41640.0294112204
2005	42735.708973906
2006	45243.1998173332
2007	46871.4953141629
2008	46104.614231887
2009	42269.7270641997
2010	44707.6247124126
2011	45096.1676649229
2012	44634.3089569704
2013	44846.9617481645
2014	45544.3658640587
2015	47005.9811924699
2016	47586.8161317266
2017	47906.883815841