Year	current US$
1975	76150000
1976	90600000
1977	101450000
1978	112650000
1979	119800000
1980	124500000
1981	135500000
1982	113000000
1983	97500000
1984	98500000
1985	103500000
1986	112000000
1987	104500000
1988	137500000
1989	64200000
1990	37100000
1991	36500000
1992	31066666.666666668
1993	34470588.23529412
1994	57813432.83582089
1995	84350678.73303168
1996	80477684.29347312
1997	87530000
1998	87305000
1999	70030232.55813953
2000	134748484.84848484
2001	106509174.3119266
2002	147813191.4893617
2003	163789696.27066514
2004	224579370.88514996
2005	299450848.14510703
2006	609396070.9990159
2007	689617486.3387978
2008	894353369.7632058
2009	785428051.0018215
2010	916800617.174003
2011	920440636.4749082
2012	1060303030.3030304
2013	966666666.6666667
2014	856969696.969697
2015	589243844.95182
2016	444507700.7303372
2017	848000597.2492611
2018	852120016.9755193
2019	699834080.0364493
2020	672881315.1443139
2021	674875482.2335025
2022	1049249317.3082469