Year	current US$
1970	641.8533071706663
1971	766.106950711573
1972	887.2171977478572
1973	1074.1870604858611
1974	1211.7104098034783
1975	1369.2450729614447
1976	1436.2856067046748
1977	1468.709342369506
1978	1833.9908530881055
1979	2003.582846354356
1980	2030.0410487021002
1981	2046.0101879244828
1982	2114.62071626848
1983	2223.920890923175
1984	2388.2857747035155
1985	2258.389142278029
1986	2366.9212029166465
1987	2441.575942085474
1988	2633.847387662029
1989	2567.017064092975
1990	2695.614864581312
1991	2269.6455776579355
1992	2048.0688387046175
1993	2063.2221231920485
1994	2613.0050394703394
1995	2784.902605224943
1996	2281.975550374709
1997	2306.38394039568
1998	2332.5082170553314
1999	2562.274105350867
2000	2752.2037826931914
2001	2844.244436749846
2002	3007.1930736932177
2003	3205.688397679945
2004	3403.29616311163
2005	3791.8730060890366
2006	4336.873329993608
2007	4814.854875685121
2008	4992.824494458363
2009	5094.437561865863
2010	5275.532601051224
2011	6106.006791925804
2012	6467.337914228037
2013	6814.243843548678
2014	7117.535734563264
2015	7683.740253656692
2016	8055.925867800175
2017	8543.33006731328
2018	8831.910408720274
2019	9139.380510055187
2020	9499.57250428248