Year	constant 2015 US$
1970	10834.976565392795
1971	11274.598475742381
1972	12128.581621423276
1973	12933.488225940771
1974	13175.85811521679
1975	13175.992672288503
1976	13451.822748758801
1977	13688.37389173338
1978	13940.402665063226
1979	13917.015641965923
1980	13730.044934790774
1981	13336.536689372966
1982	13417.432470300146
1983	13500.352055882768
1984	13808.064669029387
1985	14262.622464633363
1986	14995.440151678213
1987	15831.44130236303
1988	16640.759271617295
1989	17525.16286518372
1990	18303.41920306623
1991	18856.085354703
1992	18999.93003311813
1993	18732.706180969148
1994	18788.205647036437
1995	19530.89240862331
1996	19932.487552725044
1997	20638.59900821584
1998	21607.692661039277
1999	22563.384633298225
2000	23420.32976933393
2001	24149.940246545048
2002	24743.853876837627
2003	25221.839387864453
2004	25530.485172593315
2005	25965.43365504237
2006	26485.076231010964
2007	26853.58565535276
2008	26445.943169243135
2009	25742.674420367464
2010	25591.734832524024
2011	24964.31658236789
2012	24381.816700180185
2013	24244.273340394568
2014	24654.47897431055
2015	25748.699375736975
2016	26599.318221825917
2017	27238.670320374476
2018	27713.546807751765
2019	28048.483889239273
2020	24967.653337488824
2021	26627.31182460485
2022	27189.366994982716