Year	current US$
1970	177.52527873942864
1971	193.41074084635352
1972	216.0750014687757
1973	267.46633861607285
1974	302.7682959619361
1975	326.8101704580543
1976	344.51971274848466
1977	392.30666858837566
1978	402.47117613841624
1979	453.3193225698368
1980	490.9683625428756
1981	517.3762538363158
1982	522.3586857974378
1983	471.82407003380996
1984	495.2287851450754
1985	501.2586980429911
1986	535.3163082473756
1987	538.9249571830965
1988	602.1660555061912
1989	696.0573463093621
1990	720.2256177773596
1991	727.787718892277
1992	781.3628654183632
1993	816.0832157324871
1994	970.6321458297693
1995	1220.922061212061
1996	1367.0113423639677
1997	1417.3344129838583
1998	1355.5900802412998
1999	1228.9530888883573
2000	1328.1231114526913
2001	1362.8229464326198
2002	1435.239597255262
2003	1618.6427198831427
2004	1924.7879083694477
2005	2293.6742068405997
2006	2754.506941968307
2007	3474.45156206558
2008	4220.455165950982
2009	4090.2335757658984
2010	4805.943613200549
2011	5680.297500151781
2012	6099.924675782751
2013	6503.05889296764
2014	6737.352581179044
2015	6265.1099933622045
2016	6244.804000160515
2017	6911.20577626583
2018	7405.762899535385
2019	7497.225632890454
2020	7223.337621746258
2021	8396.574236160115