Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2005 | 440 | Kilograms | NA |
| 2006 | 956 | Kilograms | 117.27 % |
| 2007 | 1270 | Kilograms | 32.85 % |
| 2008 | 1930 | Kilograms | 51.97 % |
| 2009 | 1500 | Kilograms | -22.28 % |
