Year	current US$
1960	307.1286289561401
1961	319.6028026174042
1962	331.2013126127153
1963	341.38611144943206
1964	355.64385287295323
1965	382.590664740267
1966	411.338346967893
1967	425.7322503852762
1968	391.89993468478116
1969	401.20111050141435
1970	441.17193929294365
1971	479.9269418250331
1972	527.7565642423523
1973	616.4710764937901
1974	802.0560600674032
1975	903.6171455231498
1976	727.4556063058421
1977	863.9110608519419
1978	981.0484190221185
1979	1070.3482509889086
1980	1363.840218489248
1981	1318.1270647132371
1982	1195.5089724688175
1983	1231.0124506097286
1984	1342.2276909110262
1985	1301.0826419209966
1986	1385.4712307181605
1987	1643.9499273891686
1988	1831.01963922273
1989	2065.72030949383
1990	2988.6048202420466
1991	3190.868364844097
1992	3644.9228227452063
1993	3862.5520289617975
1994	3878.968981740863
1995	4011.1400313860313
1996	4042.1524822228603
1997	4011.0222376759534
1998	4119.706172061052
1999	4283.4770689794095
2000	4720.1682180174585
2001	4708.29493729742
2002	4844.228574472435
2003	4937.089905062671
2004	5123.596214281643
2005	5236.365425587766
2006	5486.831434391748
2007	5717.929619832202
2008	5665.966231885589
2009	5352.095987327554
2010	5399.062095832645
2011	5519.339008483301
2012	5635.521525502345
2013	5865.470901744882
2014	6031.548402109442
2015	6098.600079589755
2016	6099.957101914974
2017	6049.3919477765
2018	6001.024261840926
2019	6134.215233057133
2020	5185.158069760205
2021	6060.9682234084485
2022	6984.216959681635
2023	7987.585955090367