Year	current US$
1968	600000.023841858
1969	379999.99523162795
1970	430000.00715255697
1971	509999.99046325695
1972	709999.978542328
1973	839999.973773956
1974	1230000.01907349
1975	1889999.98569489
1976	1429999.94754791
1977	1649999.97615814
1978	2440000.05722046
1979	5349999.90463257
1980	6139999.8664856
1981	5920000.07629395
1982	5019999.98092651
1983	3980000.01907349
1984	5119999.88555908
1985	7349999.90463257
1986	10340000.1525879
1987	13710000.038146999
1988	10479999.5422363
1989	12170000.076293899
1990	10630000.1144409
1991	7769999.98092651
1992	6889999.8664856
1993	5250000
1994	4420000.07629395
1995	4659999.84741211
1996	8609999.65667725
1997	7789999.96185303
1998	4530000.20980835
1999	4369999.88555908
2000	2799999.95231628
2001	1519999.98092651
2002	1120000.00476837
2003	2059999.94277954
2004	3250000
2005	4340000.15258789
2006	4429999.82833862
2007	4530000.20980835
2008	5199999.80926514
2009	6070000.17166138
2010	5989999.771118159
2011	3839999.91416931
2012	4142388.34381104
2013	4148135.1852417
2014	3631882.9059600797
2015	2476667.8810119596
2016	2534491.7774200398
2017	2195297.0027923603
2018	1718144.65522766
2019	1854189.9919509902
2020	1128318.54820251
2021	1683101.89247131
2022	1551726.46045685