Year	current US$
1976	19999.9995529652
1978	19999.9995529652
1979	29999.999329447703
1980	9999.99977648258
1981	9999.99977648258
1982	9999.99977648258
1983	9999.99977648258
1995	19999.9995529652
1996	39999.9991059303
1997	9999.99977648258
1999	19999.9995529652
2000	29999.999329447703
2002	9999.99977648258
2003	19999.9995529652
2004	19999.9995529652
2005	19999.9995529652
2006	19999.9995529652
2007	19999.9995529652
2008	19999.9995529652
2009	19999.9995529652
2010	9999.99977648258