Year	current US$
1966	6099999.90463257
1967	9699999.80926514
1968	7770000.1001357995
1969	6320000.190287825
1970	7880000.2336502
1971	8760000.124573706
1972	10079999.733716259
1973	17519999.56369397
1974	27210000.380873654
1975	20999999.28474427
1976	9350000.288337471
1977	5309999.952092761
1978	5730000.06936491
1979	8470000.35084784
1980	16480000.430718094
1981	22489999.447017934
1982	18369999.44970014
1983	17340000.402182367
1984	20969999.57598748
1985	24060000.49784778
1986	26239999.666810054
1987	39240000.238642074
1988	43479999.33920802
1989	35379999.65809283
1990	37999999.48032202
1991	44270000.260323286
1992	34520000.87499622
1993	37720000.51289794
1994	25480000.36738815
1995	26480000.430718057
1996	28280000.32156708
1997	18450000.39786102
1998	28940000.00506641
1999	19999999.703839425
2000	14630000.287666893
2001	13130000.03620983
2002	12800000.237300983
2003	13759999.850764912
2004	19049999.82938174
2005	17940000.278875243
2006	24750000.474974494
2007	33030000.01795593
2008	30670000.253245205
2009	43339999.18587504
2010	33029999.680817105
2011	36199999.56712128
2012	43289999.32110307
2013	47149999.648332566
2014	42210000.21696082
2015	37250000.33341347
2016	29290000.14811758
2017	33749999.182298794
2018	37580000.13977286
2019	31859999.21895565
2020	36549999.26686285
2021	54400001.93379821
2022	69900000.31329693