Year	current US$
1970	4790000.01400709
1971	4749999.99627471
1972	5579999.9628216
1973	4849999.99403954
1974	7189999.91938472
1975	9860000.09067357
1976	7139999.970793719
1977	7769999.96975064
1978	10210000.1256913
1979	9569999.89598989
1980	10999999.9515712
1981	11319999.8959899
1982	10549999.9783933
1983	13329999.9851733
1984	15739999.840036001
1985	19070000.1381338
1986	21379999.993369002
1987	27860000.006854497
1988	31589999.929070503
1989	44570000.2014637
1990	50450000.338256404
1991	50639999.8143315
1992	55529999.3157387
1993	51370000.779628806
1994	64489999.711513504
1995	73200000.3457069
1996	88450001.1056662
1997	37109999.8913705
1998	36589999.79496
1999	20970000.0286102
2000	19599999.8152256
2001	21750000
2002	18479999.9296665
2003	18179999.947547898
2004	23649999.946355797
2005	26740000.1883507
2006	20699999.8688698
2007	25130000.1740456
2008	21500000.178813897
2009	20029999.8521805
2010	18129999.935627002
2011	20810000.061988797
2012	15583405.1668644
2013	18218901.9322395
2014	27814530.968666103
2015	29429788.8875008
2016	31571741.342544597
2017	32027009.375393398
2018	32311713.159084298
2019	34826000.392437
2020	33018999.6361732
2021	30296999.9313354
2022	24998999.953269962