Year	current US$
1972	29999.999329447703
1975	15050000.1907349
1976	5699999.80926514
1977	10640000.3433228
1978	19930000.3051758
1979	29200000.762939498
1980	25129999.1607666
1981	40580001.8310547
1982	29950000.762939498
1983	27139999.3896484
1984	31940000.5340576
1985	29930000.3051758
1986	37400001.5258789
1987	32939998.626709
1988	34729999.5422363
1989	51520000.4577637
1990	41900001.5258789
1991	40689998.626709
1992	111500000
1993	69449996.9482422
1994	87279998.7792969
1995	63779998.779296905
1996	44330001.8310547
1997	63900001.5258789
1998	43200000.762939505
1999	70949996.9482422
2000	32439998.626709
2001	96660003.6621094
2002	70150001.5258789
2003	185089996.33789098
2004	161889999.38964802
2005	155759994.506836
2006	188759994.506836
2007	187110000.61035198
2008	184809997.55859402
2009	138399993.89648402
2010	192600006.10351598
2011	140479995.727539
2012	132699996.948242
2013	106699996.94824201
2014	99019996.6430664
2015	122639999.38964799
2016	95110000.6103516
2017	126900001.52587901
2018	157630004.882813
2019	86400001.5258789
2020	99519996.6430664
2021	138770004.272461
2022	101059997.558594