Year	current US$
1960	2131.454518775891
1961	2307.8172588425323
1962	2489.074190367635
1963	2678.956793338756
1964	2965.3279047480273
1965	3232.5662039949484
1966	3482.9468480457053
1967	3751.64391215288
1968	3958.8223658630714
1969	4269.115281788228
1970	4736.217153777661
1971	5132.711607425517
1972	6027.128499173372
1973	7301.215425885999
1974	8089.9145846668225
1975	10117.306684267272
1976	10868.27576575461
1977	11448.61939122656
1978	12620.51861415118
1979	14877.1642883549
1980	17097.83265120947
1981	15586.430078004683
1982	13738.9722980374
1983	12608.229150586521
1984	13099.02083417654
1985	13666.8577454736
1986	17981.01941194054
1987	21792.558905982172
1988	24534.693816419072
1989	25662.22058925055
1990	30593.67244477606
1991	31822.803848236734
1992	32800.9826867546
1993	24425.28492811181
1994	26083.614387483787
1995	30282.963920006623
1996	32998.96816084324
1997	30312.48759931028
1998	30596.527204883238
1999	30941.0793624668
2000	29624.91267486176
2001	27247.857734792986
2002	29899.19524950812
2003	37321.7979047059
2004	42821.67314233583
2005	43437.06311647756
2006	46593.6021646111
2007	53700.005336306276
2008	56152.552340314
2009	46946.96027199543
2010	52869.044289158664
2011	60755.75955084647
2012	58037.82131921726
2013	61126.943196397886
2014	60020.3604576572
2015	51545.48360953215
2016	51965.15715319852
2017	53791.50872984028
2018	54589.06038606061
2019	51939.42974452912
2020	52837.9039778149
2021	61417.680876646875
2022	56299.50573280637
2023	56305.25020076702