Year	current US$
1970	6489999.998360869
1971	8270000.293850898
1972	5959999.877959493
1973	6910000.07651746
1974	14830000.361427665
1975	10850000.089034442
1976	8830000.0615418
1977	7710000.079125168
1978	30249999.895691857
1979	55859999.59707263
1980	85320000.82731247
1981	60570000.5292893
1982	40130000.05483629
1983	41340000.495314606
1984	39630000.129342094
1985	42139999.229460955
1986	58189999.271184176
1987	56989999.15272001
1988	53799999.620765515
1989	63160001.09724702
1990	62209999.90776187
1991	68270000.27894981
1992	86370000.48160549
1993	87730000.07867816
1994	85649999.55892569
1995	87479999.84025954
1996	81420001.14917748
1997	59200000.464916244
1998	52379999.93562698
1999	51769999.74250792
2000	50700000.64373015
2001	44799999.535083786
2002	41680000.06675716
2003	43760000.34809115
2004	44600000.56028368
2005	53590000.18239028
2006	49730000.257492095
2007	56430000.603199095
2008	51999999.82118603
2009	55570000.46968455
2010	58860000.43153767
2011	53299999.415874496
2012	56714327.51417166
2013	56167667.38891604
2014	59905029.41608432
2015	56735502.60980853
2016	54507727.419026166
2017	50467710.49499513
2018	63544888.19837575
2019	61332000.25558471
2020	57093000.05435943
2021	56245000.00476836
2022	55125999.86791617