Year	current US$
1960	93.39704771500803
1961	97.42096828380598
1962	104.85274931477667
1963	108.015741558424
1964	113.65837531207772
1965	117.66537076722479
1966	124.79185642578433
1967	99.85740444118544
1968	97.74452711900216
1969	122.0424174845465
1970	225.7739994821959
1971	161.54390139432005
1972	210.9954798199746
1973	254.38734720865457
1974	406.2701421034699
1975	441.97859584374845
1976	561.5500999172491
1977	541.1562460463549
1978	532.2174336822824
1979	667.9817218923605
1980	880.061983734212
1981	2187.886435701869
1982	1844.8498437643655
1983	1223.603921313544
1984	903.4493516357529
1985	882.2827027010466
1986	638.7316956732689
1987	598.2909687281084
1988	549.5037555998879
1989	474.45690010306754
1990	567.5179021541765
1991	609.3731283004755
1992	519.6358474595469
1993	551.8929192144564
1994	762.3987332478915
1995	1302.5500515850536
1996	1673.9061463568912
1997	1765.078768434452
1998	1871.7560567082473
1999	494.1292272536889
2000	563.0470862175613
2001	583.0858387682348
2002	733.5378886946155
2003	786.8022148277227
2004	992.7453990867896
2005	1250.4069127735397
2006	1652.154001730924
2007	1876.41303262801
2008	2227.7903492267865
2009	1883.8877830968868
2010	2280.1112890433797
2011	2504.879101045124
2012	2728.0227883112852
2013	2976.7568316839834
2014	3200.952799359249
2015	2679.5542234873997
2016	2144.7803444269707
2017	1941.8794788947491
2018	2125.8344907387673
2019	2334.0236419589833
2020	2074.613747854224
2021	2065.774410351139
2022	2162.6337321032993
2023	1621.1235149774413