Year	current US$
1981	170000.00178813902
1983	90000.0035762787
1984	600000.023841858
1985	389999.98569488496
1986	70000.0002980232
1987	250000
1989	39999.9991059303
1990	109999.999403954
1991	280000.001192093
1993	509999.99046325695
1995	270000.010728836
1996	289999.99165535
1997	449999.988079071
1998	300000.011920929
1999	180000.00715255702
2000	200000.00298023198
2001	100000.00149011599
2002	-9999.99977648258
2003	310000.002384186
2004	1490000.0095367401
2005	2470000.02861023
2006	3609999.89509583
2007	5869999.88555908
2008	10119999.8855591
2009	7050000.19073486
2010	12250000
2011	12029999.7329712
2012	9890000.34332275
2013	11979999.5422363
2014	10250000
2015	6780000.20980835
2016	6980000.01907349
2017	5539999.96185303
2018	9180000.30517578
2019	6949999.80926514
2020	9479999.54223633
2021	11609999.6566772
2022	10069999.6948242