Year	current US$
1980	1280.9899745423154
1981	1294.8218664189308
1982	1198.2433353556557
1983	1128.748934758187
1984	1154.2334097202668
1985	1081.93537393741
1986	1157.5565538358123
1987	1075.0454369771908
1988	1070.1880406352907
1989	1095.6372390178933
1990	1204.803397141646
1991	1259.1290932440584
1992	1366.0242283135738
1993	1430.4950951257752
1994	1620.3064213418668
1995	1757.9347405523026
1996	1874.7959240381365
1997	1819.2048272557945
1998	1515.6010008218275
1999	1653.48449989369
2000	1526.5589074849045
2001	1460.7845084446205
2002	1535.0013986506153
2003	1813.001169846429
2004	2089.7945901024405
2005	2301.8983226094106
2006	2312.400858584626
2007	2563.2578709344175
2008	2732.2362414492545
2009	2440.0899532117774
2010	2627.0022452939634
2011	2949.170043831206
2012	3088.590576621749
2013	3305.232470949951
2014	3470.847926888241
2015	3347.741564072943
2016	3453.5670698359318
2017	3643.639510490856
2018	3818.032720339363
2019	3783.4988911748255
2020	3367.7063832718422
2021	3307.5308770302972