Year	constant 2010 US$
1968	1253030493.43357
1969	1230559234.96928
1970	1409549944.2559
1971	1424942601.38208
1972	1427050016.68339
1973	1400601243.12648
1974	1594779105.29598
1975	1429650864.10259
1976	1451055423.0703
1977	1491517245.96053
1978	1543652172.46632
1979	1623279158.72071
1980	1699973849.33486
1981	1707949067.42362
1982	1676557705.87301
1983	1711770897.73242
1984	1697457675.07881
1985	1710967168.84879
1986	1783160003.633
1987	1820414457.95256
1988	1877907859.8567
1989	1984229622.74891
1990	1956600371.0752
1991	2026495585.87836
1992	2071154974.87744
1993	2175281560.21944
1994	2105271690.588
1995	2312383850.31065
1996	2599689251.77821
1997	2484866977.2187
1998	2572713776.90598
1999	2776767769.04297
2000	2738756834.07026
2001	2701926504.14333
2002	2898317441.45064
2003	3059660805.7878
2004	3232390422.29471
2005	3502665808.08365
2006	3929188677.63764
2007	4071707303.64445
2008	4174520956.40432
2009	4223460654.50496
2010	4268887412.91945
2011	4372240707.78329
2012	4596935125.77756
2013	4895211339.27174
2014	5129529173.07977
2015	5270520946.31012
2016	5443927338.16961
2017	5670068810.78344
2018	5931438629.17751