Year	current US$
1970	4270000.038668519
1971	6940000.172704459
1972	7590000.078082083
1973	14099999.846890528
1974	20409999.579191178
1975	39950000.23581089
1976	35529999.80933968
1977	27580000.47877434
1978	23689999.856054835
1979	25759999.223053463
1980	21120000.16681846
1981	19990000.234916806
1982	27549999.29107723
1983	32539999.52226873
1984	25189999.654889125
1985	19139999.600127347
1986	14309999.777004123
1987	18200000.28423969
1988	22270000.100135796
1989	117170001.34102999
1990	328039999.4049221
1991	666159995.6993009
1992	856599988.6374923
1993	432630002.772436
1994	305670000.8679185
1995	688439982.9283357
1996	369299997.5364656
1997	159849997.78494248
1998	176549998.44171113
1999	206639998.19941822
2000	219690000.9885431
2001	136400003.49283224
2002	159089999.90113074
2003	220609996.1269647
2004	266509997.74411368
2005	103770000.46707681
2006	112190001.26793984
2007	127480000.73432922
2008	169109998.49252388
2009	185910000.8104
2010	162180001.1266024
2011	133309994.25798649
2012	143170003.1850487
2013	121140000.34332272
2014	185630001.30653417
2015	409870013.9522557
2016	225279996.64284325
2017	292600005.1777814
2018	276880006.3319503
2019	251780006.17027315
2020	301980004.5490267
2021	289270004.2724606
2022	2041610038.7573242