Year	current US$
1970	731030001.1895598
1971	841260001.81213
1972	883280001.6794353
1973	1121290005.2871556
1974	1476209998.5014644
1975	1871200010.07244
1976	1807040001.513436
1977	2067449993.8823287
1978	2772960005.4919715
1979	3702060009.036211
1980	4101390005.910769
1981	4225979988.7109556
1982	4171979984.674603
1983	4030449994.6627755
1984	4180789992.6621466
1985	4639579994.702711
1986	5968510005.522519
1987	7004170007.6852
1988	8385479995.613917
1989	8667459985.185415
1990	10152750010.168179
1991	9855490042.904392
1992	10572139963.89136
1993	9541729991.069061
1994	9522639976.41392
1995	9064979969.657957
1996	8497030003.905296
1997	7631680003.082381
1998	7441630004.970357
1999	7093209982.352331
2000	7127850005.779414
2001	7747370008.930565
2002	11193609943.222254
2003	18834939923.862003
2004	21095689928.36588
2005	45047670089.62858
2006	38801899814.11957
2007	31711420127.82396
2008	33614740093.261017
2009	28536200091.29867
2010	29737580029.597507
2011	32156460060.661667
2012	29781840117.525314
2013	28393379931.267353
2014	27135580002.835026
2015	24898499967.49126
2016	25444389896.78025
2017	27988170004.887512
2018	28347800084.505222
2019	26984629920.93898
2020	29625370036.011574
2021	30858400001.464428
2022	27554370083.704597