Year	current US$
1960	425.65376916970325
1961	449.6118421248572
1962	461.8990990460787
1963	485.19408153526695
1964	520.4955310894333
1965	556.4810590729904
1966	620.05749724315
1967	641.1410329756258
1968	598.0762334414483
1969	649.3128242213011
1970	755.5953107664857
1971	816.4077781450367
1972	979.0359559756971
1973	979.7450050333567
1974	1202.6666810754957
1975	1428.0122402856534
1976	1461.4749035188497
1977	1581.4348342949118
1978	1271.1112175911433
1979	1150.9903851144293
1980	1254.657765045854
1981	1374.9421188742508
1982	1497.311933105716
1983	1620.9653595725492
1984	1048.3502456801518
1985	916.3226566950112
1986	1189.422719108315
1987	1406.9617362763713
1988	1625.7578951757805
1989	1855.9883765853629
1990	1919.7953565349717
1991	1702.5016922804923
1992	1452.1883868829573
1993	2212.256411485629
1994	2194.911221090262
1995	2621.181970159454
1996	2919.1477893680444
1997	3287.746755342215
1998	3410.427760052434
1999	3423.0086140323087
2000	3447.3038964897605
2001	3502.213118003959
2002	3683.8933377078815
2003	3557.2005908600163
2004	3819.284230903162
2005	4200.388954426526
2006	4435.571443931752
2007	4738.449777779951
2008	5056.2580360697675
2009	4452.120798821261
2010	4835.791086511479
2011	5259.931752978909
2012	5365.2421720455795
2013	5143.72218263652
2014	4991.561516529618
2015	5077.550969156158
2016	5022.700178442993
2017	5273.1490130852035
2018	5594.4935873781915
2019	5626.170459076604
2020	4897.264761808789
2021	5183.581029577668
2022	6047.216443642805
2023	6874.200283993871