Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 3 | Kilograms | NA |
| 2003 | 40 | Kilograms | 1,233.33% |
| 2004 | 1447 | Kilograms | 3,517.50% |
| 2005 | 1700 | Kilograms | 17.48% |
| 2006 | 1600 | Kilograms | -5.88% |
| 2007 | 1600 | Kilograms | 0.00% |
| 2008 | 1500 | Kilograms | -6.25% |
| 2009 | 1600 | Kilograms | 6.67% |
| 2010 | 1600 | Kilograms | 0.00% |
| 2011 | 1500 | Kilograms | -6.25% |
| 2012 | 1600 | Kilograms | 6.67% |
