Year	constant 2015 US$
1984	18311.38134621119
1985	18423.51078796542
1986	21846.028109580464
1987	23681.67389171574
1988	26053.04559921256
1989	27382.764831919518
1990	28063.2117657038
1991	28143.768648483278
1992	28152.23965469212
1993	28719.575955400913
1994	29707.031379344473
1995	30828.32722613394
1996	32959.02518665796
1997	35394.22590667948
1998	39663.5295703617
1999	44529.09364805206
2000	46334.37479889607
2001	48302.02843241211
2002	50775.03284914278
2003	53299.47150716432
2004	55545.09233004374
2005	58275.6198797312
2006	62126.82712179215
2007	66068.24203773143
2008	68547.42331937506
2009	69212.05366537876
2010	70785.82015351647
2011	71754.71689150998
2012	77006.55799192206
2013	80380.96167754887
2014	84774.53891758186
2015	84753.51874227317
2016	90801.1715251381
2017	93232.64890618228
2018	95074.43971860484
2019	95137.33488540372
2020	86613.61338049358
2021	89706.08849975649