Year	current US$
1970	146.10056206618955
1971	158.44032228902068
1972	135.11485970684518
1973	88.6161537268438
1974	116.57819853805829
1975	143.62832645554974
1976	163.75584330063268
1977	178.94806775197011
1978	207.98059932664592
1979	210.61111652981467
1980	266.12414721671473
1981	303.89190645862936
1982	318.27313798955777
1983	285.03397380369506
1984	299.57854655947716
1985	287.70406040344886
1986	283.41423633002444
1987	285.3284146214131
1988	318.76318368706154
1989	320.66152785775273
1990	305.7762744624444
1991	339.0348970136079
1992	350.5118319419488
1993	362.58697550276844
1994	354.7405676202646
1995	399.80991473037244
1996	403.1644716009859
1997	383.770607087208
1998	370.12756034258297
1999	367.9386147893674
2000	462.7567493823356
2001	434.26456706961153
2002	424.16188371984873
2003	481.48466528658713
2004	556.1785929465929
2005	605.0769242368181
2006	679.0329763402854
2007	740.6946368279569
2008	813.7498424712095
2009	795.9161276501509
2010	828.4239182875574
2011	988.1402204402942
2012	1019.4047903893153
2013	1038.07530867258
2014	1086.098155257605
2015	1194.1882424025698
2016	1369.899921529453
2017	1463.0983554513803
2018	1508.9529370228925
2019	1336.6373201061042
2020	1230.6138536035076
2021	1410.808310103913