Year	current US$
1970	261530001.9141285
1971	300530004.20890754
1972	361730002.3958087
1973	382559999.9129773
1974	526940002.67237425
1975	609199998.2632695
1976	582010001.9033998
1977	473760008.5753945
1978	794189994.1600857
1979	1148669983.5006156
1980	1273940011.6633625
1981	1170380006.2201931
1982	1117929985.7430162
1983	973250007.4952842
1984	810799998.9110981
1985	876640000.7046758
1986	1164870000.9826572
1987	1396760008.5753949
1988	1509140010.0495667
1989	1356649996.6681
1990	2139129975.5238004
1991	2436099975.541234
1992	2510219953.784719
1993	1727750010.0173044
1994	1788739993.0544212
1995	1635519987.1212246
1996	1946610013.5594609
1997	1453230005.7895477
1998	1243859993.562103
1999	962339998.3774875
2000	670910004.8523399
2001	965750001.3392414
2002	759080000.7283688
2003	836050004.3462967
2004	1176369978.830219
2005	1067670002.112165
2006	1008830006.4578656
2007	1297440012.3041122
2008	2116650027.0441175
2009	1780839997.0326576
2010	1847519996.5108192
2011	2552059987.561777
2012	2024929986.257106
2013	2698409986.9299684
2014	3136009988.196196
2015	3436859984.187411
2016	3974160028.168932
2017	4516519995.8737955
2018	4973229984.825476
2019	4542690030.740576
2020	5482880046.425385
2021	4354510026.419535
2022	4192989969.9408565