Year	current US$
1970	78530000.44077638
1971	94989999.83817337
1972	101560000.01728533
1973	104099999.28623436
1974	99630000.03620979
1975	141900000.46230853
1976	114440000.47631557
1977	105129999.6003509
1978	149080000.87738037
1979	171349998.85596338
1980	199759999.79674807
1981	210609999.77588648
1982	195589998.55816358
1983	173900000.88512897
1984	164010000.98884106
1985	166829999.68528745
1986	215119999.3491173
1987	233749999.43375593
1988	273080000.5495549
1989	271509999.8861552
1990	225729999.51243412
1991	213040000.0177324
1992	187659999.7356534
1993	172570000.74349338
1994	128019999.14646149
1995	117720001.5857816
1996	126380000.89116395
1997	155840000.56609508
1998	144159999.5754659
1999	98720001.51686367
2000	94399999.64646995
2001	78150000.93169515
2002	69770000.58256096
2003	80120000.21710996
2004	98240000.12502073
2005	94630000.4906953
2006	104640000.29116863
2007	106889999.00221825
2008	106890000.16450883
2009	109229999.81045723
2010	96850000.84340572
2011	79319999.78795648
2012	73456812.20106784
2013	69127692.81677903
2014	72628139.93543386
2015	60863584.805585496
2016	42983538.44881057
2017	33241866.743192073
2018	21274808.24291707
2019	28350481.394678354
2020	32662358.708679684
2021	44239874.04769286
2022	53196454.58459855