Year	current US$
1981	189999.99761581398
1982	239999.994635582
1983	100000.00149011599
1984	70000.0002980232
1986	610000.014305115
1987	230000.004172325
1988	9999.99977648258
1989	189999.99761581398
1990	59999.9986588955
1991	779999.971389771
1992	300000.011920929
1994	-29999.999329447703
1997	140000.000596046
1998	79999.9982118607
1999	239999.994635582
2000	109999.999403954
2001	560000.002384186
2002	419999.986886978
2003	569999.992847443
2004	479999.989271164
2005	370000.00476837205
2006	79999.9982118607
2009	509999.99046325695
2010	140000.000596046
2011	670000.016689301
2012	109999.999403954
2013	129999.995231628
2014	109999.999403954
2015	109999.999403954