Year	current US$
1970	1844729994.6695566
1971	2052840004.0473793
1972	2399280024.4092937
1973	3366129990.7322974
1974	5205430016.467348
1975	6848800019.729886
1976	6435760031.878955
1977	7106349927.246571
1978	8672250031.987206
1979	11740079916.447405
1980	13748420046.091082
1981	12595280047.893522
1982	12528219911.083582
1983	11331319925.96388
1984	11519149975.776672
1985	12335589910.984041
1986	14942249969.780453
1987	17038969912.528994
1988	18413009988.326588
1989	19115269948.005684
1990	22847019999.600945
1991	22876850042.04513
1992	23106960008.74044
1993	20996089845.091114
1994	24150649854.16831
1995	23037670061.130077
1996	19922970097.616318
1997	17750520008.265976
1998	18026519909.262665
1999	17291450047.016144
2000	16784000070.095062
2001	20017870016.098022
2002	24214390223.026287
2003	30005589870.452896
2004	32670750124.931374
2005	40242280177.59327
2006	49065769841.19417
2007	45960480080.60456
2008	48321349706.6498
2009	55132840171.81401
2010	59205739728.92764
2011	61448210171.699554
2012	62041210227.01267
2013	68135270266.53296
2014	64862500376.70139
2015	64962050009.7275
2016	67048570316.31474
2017	75693659639.35858
2018	80436010184.28806
2019	80914679595.9473
2020	98529739898.6817
2021	91711699951.17192