Year	current US$
1970	0
1971	2470000.02861023
1972	5469999.79019165
1973	11829999.923706101
1974	12010000.2288818
1975	23280000.6866455
1976	24389999.3896484
1977	22319999.6948242
1978	18530000.6866455
1979	30020000.4577637
1980	48479999.5422363
1981	54400001.5258789
1982	59290000.9155273
1983	67910003.6621094
1984	80959999.0844727
1985	89400001.5258789
1986	118379997.253418
1987	162250000
1988	248550003.05175802
1989	266910003.662109
1990	277540008.544922
1991	351679992.675781
1992	280130004.88281304
1993	163059997.55859402
1994	145820007.32421902
1995	149860000.61035198
1996	145830001.831055
1997	130020004.272461
1998	141809997.55859402
1999	154330001.831055
2000	130839996.337891
2001	129339996.337891
2002	131930007.93457
2003	153839996.33789098
2004	206149993.89648402
2005	340380004.88281304
2006	213940002.44140598
2007	251639999.38964802
2008	285010009.765625
2009	312390014.64843804
2010	316750000
2011	317239990.234375
2012	252369995.117188
2013	298450012.207031
2014	375899993.89648396
2015	226589996.33789098
2016	188270004.272461
2017	170929992.67578098
2018	161649993.89648402
2019	134660003.66210902
2020	149529998.779297
2021	191069992.06543
2022	172089999.71114093