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 % |
