Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 1300 | Kilograms | NA |
| 2003 | 2200 | Kilograms | 69.23% |
| 2004 | 2500 | Kilograms | 13.64% |
| 2005 | 1900 | Kilograms | -24.00% |
| 2006 | 2000 | Kilograms | 5.26% |
| 2007 | 5000 | Kilograms | 150.00% |
| 2008 | 3000 | Kilograms | -40.00% |
| 2009 | 3000 | Kilograms | 0.00% |
