Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2009 | 353 | Kilograms | NA |
| 2010 | 1900 | Kilograms | 438.24% |
| 2011 | 1775 | Kilograms | -6.58% |
| 2012 | 1563 | Kilograms | -11.94% |
