Year	constant 2015 US$
1960	11079.746900088418
1961	11409.973758005875
1962	11877.187983309232
1963	12312.437590738464
1964	12930.841126392072
1965	13460.41798266354
1966	14033.1315876304
1967	14395.245205920828
1968	15074.28018436111
1969	15725.011877652949
1970	15979.47297856802
1971	16366.419129874264
1972	17048.681009112734
1973	17878.208957065195
1974	17877.766389619377
1975	17713.578468914646
1976	18372.2713928603
1977	18878.167872075974
1978	19517.254185160487
1979	20084.634502095007
1980	20145.482231873088
1981	20392.865167791337
1982	20252.539898020288
1983	20664.501655895696
1984	21473.149725097195
1985	22097.703585578554
1986	22588.825886578248
1987	23206.927792971954
1988	24067.695953485665
1989	24771.985762286356
1990	25276.57034340792
1991	25314.618263023327
1992	25599.142713459416
1993	25723.69988678798
1994	26328.877180653464
1995	26813.481966413026
1996	27428.61402331626
1997	28203.910583321256
1998	28843.100518960746
1999	29609.933535877175
2000	30599.5927185608
2001	30800.359115934716
2002	31039.748785280543
2003	31437.84162439041
2004	32226.281143098502
2005	32896.893367381745
2006	33643.83675880369
2007	34264.38474646319
2008	34134.80858777252
2009	32745.957840258478
2010	33497.408552090135
2011	33951.98473815237
2012	34216.16406741821
2013	34551.57894287069
2014	35078.497246047016
2015	35733.344031365916
2016	36164.49628892817
2017	36877.32189456246
2018	37519.45855935111
2019	37993.02015106818
2020	36291.979486730044
2021	38296.86170026676
2022	39203.911845806564
2023	39640.28056095295