Year	constant 2015 US$
1970	1527.8192769345303
1971	1559.015594251114
1972	1548.9750991898993
1973	1527.3590490000504
1974	1568.3128671023394
1975	1400.8570201849989
1976	1367.7520211635192
1977	1478.3098866358353
1978	1649.3990600561579
1979	1776.3279584537556
1980	2047.981262740562
1981	2224.487311712931
1982	2097.400953607251
1983	2372.8804981530793
1984	2930.0119591388225
1985	3275.2168785794834
1986	3457.5391449435238
1987	3633.2853491730953
1988	3821.320201516878
1989	4047.8162054599106
1990	4586.28457807533
1991	4508.297901122918
1992	4668.549720941992
1993	4793.488140323188
1994	5034.790929089253
1995	5556.257406289666
1996	5864.955691813816
1997	6234.637354747906
1998	6585.487602126369
1999	6883.698194945909
2000	7037.197724987702
2001	6646.350098798969
2002	7008.447487357429
2003	7839.559557798742
2004	8160.753677459259
2005	7129.632111958419
2006	8605.693697892282
2007	8914.614396091652
2008	9376.078640459717
2009	8311.3452332782
2010	8571.559911358825
2011	8986.625793476063
2012	8888.11483316616
2013	9194.115577721683
2014	9530.588447222503
2015	9480.431512618072
2016	9688.248278642095
2017	9972.37713599052
2018	10453.635524360749
2019	10888.644561050238
2020	7164.307384086376
2021	9731.556181468293
2022	11035.582470084064
2023	11534.916904380472