Year	current US$
1968	4000000
1969	389999.98569488496
1970	800000.011920929
1971	819999.992847443
1972	1090000.0333786
1973	1159999.9666214
1974	1080000.04291534
1975	1600000.02384186
1976	2180000.0667572
1977	1330000.04291534
1978	1799999.95231628
1979	2589999.91416931
1980	3079999.92370605
1981	2140000.10490417
1982	4449999.80926514
1983	5860000.1335144
1984	3950000.04768372
1985	4139999.8664856004
1986	4039999.96185303
1987	5050000.19073486
1988	4119999.88555908
1989	4010000.2288818406
1990	1600000.02384186
1991	2490000.00953674
1992	4119999.88555908
1993	2980000.01907349
1994	1269999.98092651
1995	239999.994635582
1996	2140000.10490417
1997	2079999.9237060498
1998	2750000
1999	3880000.1144409203
2000	2740000.00953674
2001	59999.9986588955
2002	1059999.9427795399
2003	839999.973773956
2004	1039999.96185303
2005	1120000.00476837
2006	1500000
2007	1029999.97138977
2008	1580000.04291534
2009	1769999.98092651
2010	2019999.9809265102
2011	1659999.9666214
2012	1386601.2096405001
2013	1996013.04531097
2014	932708.919048309
2015	1159489.2740249601
2016	575973.808765411
2017	316558.182239532
2018	375223.338603973
2019	585352.778434753
2020	422256.648540497
2021	714185.357093811
2022	917538.76209259