Year	current US$
1971	227.47954876048414
1972	240.73158640773187
1973	258.37522154064004
1974	285.5537339955827
1975	302.7179294234023
1976	352.41667408161595
1977	417.01383312820644
1978	767.6446053508059
1979	842.5106941644334
1980	905.7723683865256
1981	902.3117513547504
1982	881.1251408018135
1983	942.7635689417017
1984	1011.9568688845706
1985	1069.4132251233484
1986	1118.554951046287
1987	1185.655150722125
1988	1088.097121243231
1989	969.9880622799509
1990	830.1712660192998
1991	757.6326285277379
1992	783.117451319096
1993	787.0458444616935
1994	718.2541119246271
1995	800.024647709901
1996	763.5752965661728
1997	827.9926583005713
1998	905.3132315669798
1999	898.2237424781774
2000	975.7672548251729
2001	1008.3289715429913
2002	1004.4879654110125
2003	1021.3350750335309
2004	1062.958870187373
2005	1143.0421112175957
2006	1240.0800763729303
2007	1400.7294593158247
2008	1548.3206860695375
2009	1605.1761912014083
2010	1636.5238538373337
2011	1827.7099676252747
2012	1843.7550735142993
2013	1805.1239863236367
2014	1869.9747875365008
2015	1984.1046493744532
2016	2001.8967900167936
2017	2127.0930793689768
2018	2135.6199837674835
2019	2198.910451374012
2020	2096.5341996081115
2021	2407.0506070282618