Year	current US$
1961	169.2421980179755
1962	173.4634979494019
1963	190.9700698373936
1964	207.06328527933303
1965	225.00371021380303
1966	231.9531787251291
1967	245.71705505483104
1968	271.4666348134266
1969	296.0367415482151
1970	321.5433992518155
1971	359.49555947912665
1972	418.4304736250084
1973	541.4621575412137
1974	817.1549802356286
1975	905.2966317960534
1976	1086.4250115092311
1977	1216.8924971041622
1978	1261.753983007309
1979	1541.5671184034761
1980	1817.4859332680385
1981	1686.1913484059423
1982	1825.9288247916393
1983	1965.0306835176293
1984	1983.0163619658674
1985	2078.556076898976
1986	2176.1131738201075
1987	1823.7283225983958
1988	1690.8894192992298
1989	1645.322828802964
1990	2205.302926843502
1991	1091.413145422057
1992	1163.4069768149661
1993	1178.3436066287986
1994	1222.0869525926148
1995	1324.2046222598246
1996	1452.3149921820318
1997	1496.8115280736313
1998	1504.832369760004
1999	1613.498534009127
2000	1671.5416749255141
2001	1659.347739068808
2002	1571.0336413793211
2003	1697.618430565162
2004	1976.1308089461338
2005	2266.832820912361
2006	2604.927478010002
2007	3135.8044356565038
2008	3815.0990110512857
2009	3627.3923138402342
2010	4116.445783856544
2011	4730.878050605318
2012	5004.756815940378
2013	4525.041841556684
2014	4385.600914148755
2015	3862.572204614501
2016	3887.0200728029
2017	3821.918886536129
2018	3568.1994086203104
2019	3536.336615196561
2020	3215.9590683474607
2021	3672.5569203545087
2022	4147.974631721709
2023	3821.5789566060344