Year	current US$
1970	403199997.3878264
1971	425899995.38660043
1972	511409996.62876123
1973	540759996.22792
1974	709199999.3622304
1975	886980002.1313133
1976	867349998.4145162
1977	772879994.0571189
1978	966300001.1034312
1979	1134020001.8920004
1980	1535619998.6636636
1981	1676569989.1094117
1982	1507149990.7560647
1983	1357080001.2946126
1984	1502669981.2076986
1985	1499509997.3771725
1986	2010759986.203163
1987	2457530012.615025
1988	2644939995.922149
1989	2962229992.980137
1990	4164220001.706853
1991	4125930007.975549
1992	4518859990.933911
1993	4628970000.753179
1994	4867439986.69833
1995	4458559967.19003
1996	3984959990.950301
1997	3293580015.6984463
1998	2851130007.1273003
1999	2765510001.0558968
2000	2269280002.9087806
2001	1926160001.5088916
2002	2948779992.6660967
2003	4227190003.90917
2004	4190739982.9979987
2005	5529649979.045617
2006	6382100046.787409
2007	4614289979.333056
2008	4371940023.187549
2009	4672620075.179266
2010	5376180003.194139
2011	6259420024.469496
2012	5926960026.046262
2013	4978069997.893646
2014	4778450001.992284
2015	3533370008.71636
2016	3632170011.5595007
2017	4705539979.77637
2018	4690200055.51167
2019	4575299987.418577
2020	6943079974.1316595
2021	6602089999.38704
2022	6852750062.668697