Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2005 | 53 | Kilograms | NA |
| 2006 | 71 | Kilograms | 33.96 % |
| 2007 | 212 | Kilograms | 198.59 % |
| 2008 | 196 | Kilograms | -7.55 % |
| 2009 | 200 | Kilograms | 2.04 % |
