Year	current US$
1991	9460000.03814697
1992	939999.997615814
1994	9999.99977648258
1996	280000.001192093
1997	259999.990463257
1998	289999.99165535
1999	180000.00715255702
2000	59999.9986588955
2001	-230000.004172325
2002	419999.986886978
2003	270000.010728836
2004	-400000.00596046395
2005	1190000.0572204601
2006	1440000.0572204601
2007	-319999.99284744303
2008	2900000.09536743
2009	9810000.4196167
2010	629999.995231628
2011	699999.988079071
2012	200000.00298023198
2013	170000.00178813902
2014	319999.99284744303
2015	100000.00149011599
2016	50000.0007450581
2017	50000.0007450581
2018	79999.9982118607
2019	150000.005960464
2020	330000.013113022
2021	540000.021457672
2022	560000.002384186