Year	current US$
1977	4099999.9754130794
1979	0
1980	11059999.9576807
1981	11970000.0025332
1982	12480000.0097603
1983	14499999.9981374
1984	12949999.909847999
1985	13239999.9015033
1986	12360000.0739098
1987	14299999.9970198
1988	17489999.9797344
1989	21529999.9564886
1990	25119999.9898672
1991	24220000.110566597
1992	19410000.0653416
1993	21259999.9886006
1994	26810000.058263503
1995	37459999.749437004
1996	35499999.6945262
1997	40809999.7546524
1998	40170000.106096305
1999	32799999.974667996
2000	26700000.1221895
2001	46549999.892711595
2002	60839999.437332205
2003	60640000.1347065
2004	49379999.7866154
2005	47209999.94874
2006	52250000.0596046
2007	62840000.808239
2008	87119999.4087219
2009	85329999.4468689
2010	83340000.2717972
2011	81929999.2322922
2012	85874226.808548
2013	86936269.9985504
2014	87726252.3770332
2015	86488791.94259639
2016	72755773.96154399
2017	62739806.7116737
2018	61044980.1683426
2019	85323865.0560379
2020	92750260.2338791
2021	99701543.5695648
2022	115951341.33100508