Year	current US$
1960	276.6433632573279
1961	279.3326561302838
1962	275.9661393785042
1963	277.53251549630664
1964	282.3768563535245
1965	294.89360486909703
1966	279.337779057297
1967	295.0564492657815
1968	302.8028709381466
1969	346.53892033227316
1970	362.14414680377433
1971	406.21750326237554
1972	483.9699742013237
1973	579.2964182335816
1974	674.5390300379603
1975	716.9495150385849
1976	686.7217300716384
1977	676.3292021563776
1978	664.4325260419013
1979	777.8830087834235
1980	947.3671354848263
1981	1067.2545196006781
1982	1094.2925900083997
1983	957.7752321758384
1984	756.3344913483455
1985	648.6680363591801
1986	692.1399583481947
1987	726.6207296630295
1988	816.6994731489698
1989	841.5632255864258
1990	868.4901748515631
1991	832.6879694810516
1992	634.4473585070377
1993	608.0466104513254
1994	634.5826172338702
1995	646.829559758782
1996	765.1651240618882
1997	750.6839091491313
1998	554.3614835833024
1999	585.3317991945345
2000	565.2843897036133
2001	569.003208636604
2002	529.1868828143748
2003	474.30220105818
2004	477.3994910401639
2005	470.78376143877915
2006	441.49879688479535
2007	425.0368416926842
2008	351.83910054439133
2009	762.297960300667
2010	937.8403399873721
2011	1082.6157732528213
2012	1290.1939574670246
2013	1408.3678103123607
2014	1407.0342910991558
2015	1410.3291734890802
2016	1421.7877914056774
2017	1192.1070119886174
2018	2269.177012323324
2019	1421.8685964175797
2020	1372.6966743331732
2021	1773.9204108807812
2022	1676.8214889678823
2023	1592.4165736854188