Year	current US$
1970	3610000.02734363
1971	4399999.9910593
1972	3490000.05424023
1973	3909999.9666214
1974	10569999.9220669
1975	12320000.0710785
1976	7840000.02406538
1977	12069999.948144
1978	14590000.3015995
1979	17000000.089407
1980	13490000.2367795
1981	10670000.0334531
1982	23430000.3778189
1983	41309999.2126226
1984	26359999.6604025
1985	18489999.8754263
1986	17050000.2037734
1987	17100000.1076609
1988	16050000.205636
1989	27829999.625682797
1990	23190000.0870228
1991	50170000.0166893
1992	53830000.4005432
1993	78929998.3382225
1994	51560000.4382432
1995	53579999.1488457
1996	39149999.897927
1997	27150000.154972102
1998	26669999.6590614
1999	17339999.8545647
2000	19149999.7973442
2001	20199999.8688698
2002	17570000.052452102
2003	21799999.833107002
2004	18220000.0286102
2005	21850000.0238419
2006	27269999.921321902
2007	42170000.0166893
2008	27239999.7711182
2009	29210000.410676
2010	26459999.9189377
2011	29980000.0190735
2012	28643555.6183569
2013	49100267.3581243
2014	32567946.2552071
2015	46977976.2029648
2016	36275158.3456993
2017	37263729.5722961
2018	45172090.7092094
2019	47043999.3739128
2020	55221000.5521774
2021	43404999.9713898
2022	46325999.37915799