Year	current US$
1972	59999.9986588955
1974	280000.001192093
1975	1509999.9904632599
1976	1179999.94754791
1977	1940000.0572204601
1978	2910000.08583069
1979	2259999.99046326
1980	2309999.94277954
1981	2960000.03814697
1982	1990000.0095367401
1983	1559999.9427795399
1984	2079999.9237060498
1985	2859999.89509583
1986	1730000.01907349
1987	2109999.89509583
1988	2579999.92370605
1989	3430000.0667572
1990	2549999.95231628
1991	3369999.8855590797
1992	2849999.90463257
1993	3730000.01907349
1994	3670000.07629395
1995	5369999.88555908
1996	5530000.20980835
1997	6579999.92370605
1998	6280000.20980835
1999	8699999.80926514
2000	6719999.79019165
2001	6780000.20980835
2002	5940000.05722046
2003	7710000.03814697
2004	8359999.65667725
2005	9529999.73297119
2006	13649999.6185303
2007	12729999.5422363
2008	17219999.3133545
2009	14689999.5803833
2010	23850000.3814697
2011	25729999.5422363
2012	24280000.6866455
2013	19069999.6948242
2014	22760000.2288818
2015	19639999.3896484
2016	23290000.915527303
2017	22540000.915527303
2018	28469999.3133545
2019	28719999.3133545
2020	24200000.762939498
2021	23750000
2022	17850000.3814697