Year	current US$
1977	159999.99642372102
1980	379999.99523162795
1981	289999.99165535
1982	219999.998807907
1983	200000.00298023198
1984	219999.998807907
1985	189999.99761581398
1986	180000.00715255702
1987	639999.985694885
1988	689999.997615814
1989	460000.00834465
1990	490000.009536743
1991	689999.997615814
1992	920000.016689301
1993	850000.023841858
1994	949999.988079071
1995	1000000
1996	1019999.98092651
1997	920000.016689301
1998	460000.00834465
1999	1120000.00476837
2000	740000.009536743
2001	750000
2002	1039999.96185303
2003	2150000.09536743
2004	1580000.04291534
2005	2099999.90463257
2006	2690000.05722046
2007	1820000.05245209
2008	2789999.96185303
2009	2269999.98092651
2010	2599999.90463257
2011	3099999.90463257
2012	2384866.95289612
2013	2655937.9100799602
2014	2650992.39349365
2015	1781200.17051697
2016	1618791.93782806
2017	1435872.5547790502
2018	1288010.0011825599
2019	2385499.95422363
2020	2949510.09750366
2021	3397153.13911438
2022	3785109.9967956496