Year	current US$
1980	965.6840459975213
1981	1091.808993568916
1982	1188.5982180715048
1983	1308.417230237099
1984	1429.2431474328152
1985	1568.1005098057433
1986	1789.4940399322895
1987	2031.905583663908
1988	2319.4627881476486
1989	2482.4382404628655
1990	2700.469903733783
1991	2908.856502081095
1992	3110.636330869053
1993	3283.802896776851
1994	3474.6559676462757
1995	3593.1744714885335
1996	3765.5961054060376
1997	3925.7430806953867
1998	4196.1763496839185
1999	4192.268913735261
2000	4051.660766246891
2001	4296.147279831115
2002	4137.0032697134275
2003	4283.003537754713
2004	4482.962455406422
2005	4478.026867905437
2006	4983.91212037232
2007	5299.293291635463
2008	5766.443099478424
2009	6006.7529671011525
2010	6047.6987422343245
2011	5913.789374965625
2012	5756.76827723602
2013	5808.57126991296
2014	6183.700899690346
2015	6357.418964731955
2016	6856.690756592422
2017	6429.930485642813
2018	6739.633341151165
2019	7210.428719398863
2020	6070.606566318773
2021	6519.000384934334