Year	constant 2015 US$
1960	1353.6407243311064
1961	1262.0017459936857
1962	1432.376559681532
1963	1484.088108126733
1964	1540.0953124520245
1965	1315.468935856217
1966	1439.6535564581222
1967	1443.2650892095223
1968	1406.907967373473
1969	1514.4010486330126
1970	1764.3168130512329
1971	1912.9045624344215
1972	2097.8449428763806
1973	2268.930079113239
1974	2333.7594206744225
1975	2396.3135168825297
1976	2492.2909043733102
1977	2515.5608092790935
1978	2548.14785928866
1979	2624.863350193484
1980	2669.933223922456
1981	2702.9017669600375
1982	2710.7663581144047
1983	2771.3110012262528
1984	2750.8648432556342
1985	2551.9472058195024
1986	2640.6353837355314
1987	2818.2627405241897
1988	2783.4947990483893
1989	2889.457331009743
1990	2684.5023131748503
1991	2668.0717757354723
1992	2905.4607698103046
1993	3007.952184308325
1994	3047.2429058618554
1995	3160.995912736937
1996	3314.38416377603
1997	3546.3144207427445
1998	3715.2527862690754
1999	3865.041461754999
2000	3991.8053762987856
2001	4028.4942133986706
2002	4151.611857033932
2003	3939.026669766674
2004	3913.6677013120934
2005	4366.675977793368
2006	4728.798580884455
2007	5012.708743254694
2008	5183.650431752099
2009	5162.861580399968
2010	5521.4672712191295
2011	5606.7229868949225
2012	5681.342486980983
2013	5838.095252289065
2014	6167.63521661597
2015	6556.748834280626
2016	6896.457264328392
2017	7106.873167690273
2018	7556.247459685397
2019	7829.319419906935
2020	7221.035523458876
2021	8030.32461222471
2022	8435.429743222165
2023	8491.452242424039