Year	current US$
1960	25.09580828096181
1961	27.274629750593316
1962	27.953179476416942
1963	25.807009448905287
1964	17.331833357498198
1965	15.113227695405042
1966	11.79267628970691
1967	16.52352817276411
1968	21.500297333382665
1969	21.450314711294318
1970	20.655084203200207
1971	21.04421975880715
1972	23.193270720031585
1973	24.67841144675088
1974	41.193617721821255
1975	34.968946158818106
1976	38.93491640645954
1977	27.684711176795886
1978	29.06295815174986
1979	29.013206244499504
1980	31.023485364313583
1981	32.5710223784719
1982	42.63256246475542
1983	39.00077340358706
1984	36.06385772639143
1985	40.099437956649695
1986	42.128697608950674
1987	40.866295831357746
1988	39.64900707581104
1989	50.98703094947419
1990	52.748555907731976
1991	50.88017620075453
1992	58.47915088906679
1993	75.69151851722455
1994	104.68965119109093
1995	123.34776119054236
1996	141.0198438728531
1997	107.39296724243503
1998	145.10366598805413
1999	188.42194810341664
2000	195.55099566638557
2001	140.77616393091301
2002	145.81753386500236
2003	223.06377589262084
2004	223.22984697057663
2005	251.1703569958963
2006	301.58191391586035
2007	416.6004322442269
2008	653.8660001859614
2009	752.9440358991874
2010	1003.033455060332
2011	1204.4964722422833
2012	1193.5476490879898
2013	1189.9647647803583
2014	1283.1064921137954
2015	1157.783961125809
2016	1219.801439249075
2017	1263.2460548519148
2018	1288.5067776254539
2019	1415.2489855751178
2020	1478.8727856237763
2021	1233.2277699735228
2022	1149.0189610705781
2023	1187.567064234608