Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
Year | Production | Unit of Measure | % Change |
2002 | 2000 | Kilograms | NA |
2003 | 2000 | Kilograms | 0.00% |
2004 | 2000 | Kilograms | 0.00% |
2005 | 2000 | Kilograms | 0.00% |
2006 | 2000 | Kilograms | 0.00% |
2007 | 2000 | Kilograms | 0.00% |
2008 | 2000 | Kilograms | 0.00% |
2009 | 2000 | Kilograms | 0.00% |
2010 | 2000 | Kilograms | 0.00% |
2011 | 2000 | Kilograms | 0.00% |
2012 | 1900 | Kilograms | -5.00% |