Year	current US$
1970	479.63871853395034
1971	470.6670318137038
1972	512.5363862160835
1973	679.1590601805298
1974	686.764144203214
1975	698.5635175988683
1976	590.8348121737587
1977	544.9427105127153
1978	594.0507716232264
1979	692.035549214089
1980	840.069589326344
1981	841.9913482030805
1982	795.6622744829288
1983	731.7159873399626
1984	748.473198651779
1985	776.0634303484126
1986	1063.900216184269
1987	1038.9157988023649
1988	864.540699067193
1989	839.0767373989329
1990	991.3159525564902
1991	873.2584472032105
1992	754.9804264519548
1993	980.9663506322312
1994	1005.1460562365818
1995	779.2123115264143
1996	998.3470131678145
1997	667.7534886976648
1998	517.0999631042694
1999	545.1188362069494
2000	530.208572722679
2001	519.2955829957665
2002	568.4096734388436
2003	663.9206639053823
2004	726.5977407076966
2005	843.955111272836
2006	861.5182023329347
2007	878.1354699202865
2008	1080.556567684536
2009	1126.5385847915547
2010	1043.2814266629498
2011	1217.2120640444355
2012	1207.7007023999413
2013	1378.2301934090328
2014	1484.1701050994432
2015	1292.7330554652256
2016	1428.2579078390731
2017	1547.8227096720534
2018	1815.605495450582
2019	1924.4081495217313
2020	2155.2658678250846
2021	2350.452700971338
2022	2386.6961758183975
2023	2601.7905465211456