Year	current US$
1970	5530000.038445004
1971	5410000.151023272
1972	7130000.008270141
1973	14239999.637007706
1974	16839999.638497837
1975	23789999.85568224
1976	25259999.265894305
1977	29589999.699965067
1978	30450000.42393804
1979	37139999.91863965
1980	42609999.952837825
1981	34340000.024065346
1982	18940000.515431166
1983	19500000.210478894
1984	13370000.097900625
1985	11640000.002458684
1986	12399999.847635623
1987	14319999.746978289
1988	13769999.952986835
1989	6899999.953806396
1990	20060000.114142887
1991	57560000.885278
1992	58210000.12755391
1993	23250000.23841857
1994	18629999.74749983
1995	23210000.17039478
1996	31809999.76396562
1997	20989999.52897428
1998	21920000.465586778
1999	21769999.423995614
2000	17340000.12837351
2001	13290000.02704561
2002	4200000.025331978
2003	19370000.226423103
2004	33499999.972060308
2005	282680004.3694675
2006	34370000.58591364
2007	37440000.183880374
2008	141050002.2545452
2009	40659999.99642369
2010	34439998.88747936
2011	50410000.737756446
2012	22000000.568106804
2013	32810000.447556358
2014	35559999.49574469
2015	70790000.20027158
2016	83249997.89893633
2017	61159999.52703707
2018	70579999.00914721
2019	73200000.29914081
2020	68519999.31037438
2021	66540000.40143728
2022	48830000.71346765