Year	current US$
1967	176.57170871449017
1968	184.38162193818366
1969	189.20730568901476
1970	178.583238466264
1971	185.1286061452156
1972	195.40548242600832
1973	224.0372380536014
1974	270.036671461878
1975	308.24283548476075
1976	317.9866459329256
1977	330.75591295013385
1978	372.20334957647856
1979	428.94275689986114
1980	484.89770991392805
1981	506.7776565206556
1982	479.9523670309223
1983	439.97278991024143
1984	433.9741576472055
1985	447.52222527081636
1986	431.3745063647706
1987	459.40894550107
1988	482.64134727917053
1989	469.24978808161035
1990	463.2587525891418
1991	480.0107375509879
1992	429.8874325671331
1993	376.2392412132745
1994	320.90552387128525
1995	326.8935375906313
1996	327.73704516811415
1997	343.5778528234336
1998	340.38372301649804
1999	339.8225330458545
2000	338.53066507326974
2001	336.02055780552485
2002	341.32675520514596
2003	366.95426751060575
2004	421.9344361286675
2005	477.12188490810655
2006	524.9592596252595
2007	591.9460776776366
2008	689.6083371807914
2009	742.2733505009468
2010	771.6843638769672
2011	796.6535530893689
2012	829.3723310718896
2013	879.8161348620736
2014	938.333024944731
2015	932.7092795086065
2016	906.5314877120505
2017	896.1343091823298
2018	941.5153816806687
2019	972.5104371412434
2020	957.1082608173189
2021	1003.3391026409076
2022	1071.2010527793666
2023	1132.6088563774388