Year	current US$
1961	2720000.02861023
1966	2410000.08583069
1967	709999.978542328
1969	9999.99977648258
1975	8649999.61853027
1976	23969999.3133545
1977	26059999.4659424
1978	35060001.373291
1979	32479999.5422363
1980	61840000.1525879
1981	48689998.626709
1982	51389999.3896484
1983	56189998.626709
1984	60599998.4741211
1985	64309997.55859381
1986	104080001.831055
1987	84459999.0844727
1988	82389999.3896484
1989	82980003.3569336
1990	105279998.77929701
1991	102000000
1992	116480003.35693401
1993	114959999.084473
1994	119669998.168945
1995	115730003.35693401
1996	116459999.084473
1997	111010002.13623
1998	129770004.272461
1999	136970001.220703
2000	94650001.5258789
2001	78059997.55859381
2002	92500000
2003	145330001.831055
2004	143779998.779297
2005	162869995.117188
2006	139110000.61035198
2007	145100006.10351598
2008	203649993.89648402
2009	196279998.779297
2010	326980010.986328
2011	251369995.117188
2012	245639999.38964802
2013	245160003.66210902
2014	231389999.38964802
2015	153250000
2016	115239997.86377
2017	123010002.13623
2018	84279998.7792969
2019	151940002.44140598
2020	158149993.89648402
2021	145240005.493164
2022	82540000.9155273
