Year	current US$
1970	32059999.86454845
1971	44819999.30739394
1972	43639999.937266134
1973	39119999.59126113
1974	11979999.52919777
1975	39200000.299140826
1976	17119999.734684836
1977	21070000.4529208
1978	22150000.063702453
1979	19550000.132992864
1980	41200000.39786105
1981	91029999.7963011
1982	151140000.5873292
1983	228509999.06472862
1984	367599999.4575982
1985	443409998.0182945
1986	1008189989.1942745
1987	1159630005.4155295
1988	1421530003.9574502
1989	1065079983.3964549
1990	1094990013.711154
1991	620539999.894798
1992	725300008.0175695
1993	628839991.7259811
1994	492810004.53420013
1995	361160003.6174059
1996	337450002.606958
1997	285029999.1648645
1998	524979997.4095078
1999	242850004.47556388
2000	286209995.2027203
2001	206980001.12921008
2002	825019993.8807635
2003	745000007.322058
2004	359420001.32799137
2005	992049995.2714894
2006	1139839979.4697757
2007	408240006.01843005
2008	470119995.6368658
2009	517740008.4901602
2010	420399997.65157706
2011	870600016.3909053
2012	201650000.64857307
2013	215530000.58792531
2014	216420000.25697044
2015	317769999.2526319
2016	344569999.47503155
2017	389939998.47955996
2018	436449997.5126238
2019	335179999.66628855
2020	307500003.1087547
2021	976790026.2847548
2022	481619994.31997544