Year	current US$
1960	1389.0213437600412
1961	1530.5377343300293
1962	1711.2180753693017
1963	1807.2527260112306
1964	2049.3971682137026
1965	2284.228421700224
1966	2487.136180908839
1967	2700.746289646772
1968	2776.1353904434427
1969	3151.133161346945
1970	3464.4551557319623
1971	3845.5060887917516
1972	4654.298936039216
1973	6119.370222186677
1974	6770.750026828925
1975	7999.112666764838
1976	8787.589721932967
1977	9783.852021513223
1978	11826.01861305033
1979	13751.99894801603
1980	13883.887143273194
1981	12081.801049607682
1982	11804.432888013429
1983	11857.892135723148
1984	11562.919077848665
1985	12253.10021417854
1986	17201.08881296737
1987	21340.727862552438
1988	22527.0467265631
1989	21901.054745943984
1990	26891.44644895708
1991	27011.37745900514
1992	29569.660356711156
1993	27597.975228635663
1994	29995.579623547947
1995	35351.36546068185
1996	35650.7140860994
1997	32835.939939883254
1998	33368.14241509196
1999	33440.79480542043
2000	30743.547681635428
2001	30751.65434826803
2002	33228.69354488193
2003	40458.77739866088
2004	46511.598332430505
2005	48799.825601127486
2006	52026.99951427229
2007	58487.05496776958
2008	64322.06350208421
2009	58163.27687628146
2010	58041.39843633848
2011	61753.64713197696
2012	58507.50805178519
2013	61191.193704202844
2014	62548.98473329075
2015	53254.856370091584
2016	54663.99837191949
2017	57610.09818011347
2018	61591.92886989581
2019	59592.98068864544
2020	60836.59241216378
2021	69268.65179831337
2022	67790.05399232758
2023	67967.38186855623