Year	current US$
1967	53.33819572381265
1968	64.83917994726227
1969	74.34221459574891
1970	79.41345543275426
1971	78.8657568258469
1972	90.51205916839943
1973	130.48974367241385
1974	201.66767057478435
1975	232.1706348075287
1976	277.05079281477396
1977	332.28205388283493
1978	364.2857904730861
1979	355.2359508570643
1980	489.1601965086692
1981	563.7833644769723
1982	580.8105955215567
1983	510.43498651009986
1984	522.7171469020441
1985	514.4376435133322
1986	472.72263866880047
1987	440.37237814723636
1988	479.8107166338273
1989	527.8114772223694
1990	582.6789676722967
1991	629.1606798004889
1992	678.9777369574623
1993	824.0791489948077
1994	907.4717857313649
1995	1020.1466814341018
1996	1129.09270986001
1997	1054.3473582755219
1998	459.19186310394053
1999	663.5232298684462
2000	770.8653515802936
2001	739.0039465353548
2002	888.9013896656547
2003	1052.4131992191647
2004	1136.7552112796484
2005	1249.3976935941823
2006	1572.7979397215524
2007	1840.3299266770207
2008	2144.3895441928744
2009	2239.0952652989554
2010	3094.443078664034
2011	3613.8008884857973
2012	3668.212083370969
2013	3602.885516806293
2014	3476.6248544154746
2015	3322.581678954442
2016	3558.8188517573667
2017	3839.785074604913
2018	3902.6616755589976
2019	4151.227554407959
2020	3895.618152002246
2021	4334.231454079126
2022	4787.912364049026
2023	4940.549805011562