Year	constant 2015 US$
1983	1742.1677119132921
1984	1865.3220577533473
1985	2158.7377645922375
1986	2056.4257984552214
1987	1923.3414252525836
1988	1521.6473288974876
1989	1543.2979995340572
1990	1723.6336535175396
1991	1672.1698325275431
1992	1750.8091065004905
1993	1903.1028731808108
1994	2079.9397443253993
1995	2057.7295514809593
1996	1871.0654363140231
1997	1883.6764049728556
1998	1635.1832820646666
1999	1567.0429969943634
2000	1492.0070003938254
2001	1450.3248334844598
2002	1713.313160245251
2003	1506.2539152845877
2004	1721.4387055632722
2005	1738.3602015080444
2006	1893.0511575938685
2007	2217.0147447096656
2008	2220.124143780694
2009	2278.6708384401054
2010	2400.8015854272294
2011	2461.4659978221084
2012	2504.36247135675
2013	2562.5332438894543
2014	2618.9016783084257
2015	2709.3623002988807
2016	2826.5196793681985
2017	2923.728723718395
2018	2963.9609347851397
2019	2993.0584385728275
2020	2802.1406535888264
2021	2969.699976084876