Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2005 | 335 | Kilograms | NA |
| 2006 | 450 | Kilograms | 34.33% |
| 2007 | 500 | Kilograms | 11.11% |
| 2008 | 712 | Kilograms | 42.40% |
| 2009 | 452 | Kilograms | -36.52% |
| 2010 | 356 | Kilograms | -21.24% |
| 2011 | 1032 | Kilograms | 189.89% |
| 2012 | 900 | Kilograms | -12.79% |
