Year	current US$
1961	167.67696211113656
1962	171.85922136415306
1963	189.20388378012387
1964	205.1482611724443
1965	222.92276414643257
1966	229.80796052128937
1967	243.4445416864233
1968	268.95597654205625
1969	293.29884672622944
1970	318.5696061906869
1971	356.17076599005753
1972	414.5606207780018
1973	536.454446573716
1974	809.5975251121652
1975	896.9239989005795
1976	1076.3772133949474
1977	1205.6380708822328
1978	1250.0846554818504
1979	1527.3099400237008
1980	1800.6769206444608
1981	1670.5966133148393
1982	1809.041728113819
1983	1946.8571037609092
1984	1964.6764417216941
1985	2059.3325579182347
1986	2155.9873983521766
1987	1806.8615772578084
1988	1675.2512341150568
1989	1630.1060660798098
1990	2203.9591769419603
1991	1090.9132237372942
1992	1163.0831206066355
1993	1178.2651855110716
1994	1222.2816646836109
1995	1324.1816897465899
1996	1453.6590688342546
1997	1497.911532510081
1998	1505.2412698959415
1999	1614.6772247763245
2000	1673.5735159921408
2001	1662.7352059431976
2002	1575.4064407117833
2003	1702.2924269151538
2004	1982.0536438916406
2005	2274.6126764478004
2006	2616.1328618712587
2007	3151.844929394207
2008	3834.668407842928
2009	3643.2972177812394
2010	4133.834750114653
2011	4751.647346886508
2012	5026.645557663031
2013	4538.770444380259
2014	4397.366758658926
2015	3869.3156107047016
2016	3891.143031717611
2017	3824.2381356536816
2018	3568.2674967495823
2019	3534.9269363305807
2020	3215.751249976102
2021	3672.484486750695
2022	4152.183636760595
2023	3827.116240264567