Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 8 | Kilograms | NA |
| 2003 | 9 | Kilograms | 12.50% |
| 2004 | 162 | Kilograms | 1,700.00% |
| 2005 | 2770 | Kilograms | 1,609.88% |
| 2006 | 2800 | Kilograms | 1.08% |
| 2007 | 2800 | Kilograms | 0.00% |
| 2008 | 3300 | Kilograms | 17.86% |
| 2009 | 2000 | Kilograms | -39.39% |
| 2010 | 1774 | Kilograms | -11.30% |
| 2011 | 1800 | Kilograms | 1.47% |
| 2012 | 1800 | Kilograms | 0.00% |
