Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2008 | 47 | Kilograms | NA |
| 2009 | 375 | Kilograms | 697.87% |
| 2010 | 494 | Kilograms | 31.73% |
| 2011 | 490 | Kilograms | -0.81% |
| 2012 | 3917 | Kilograms | 699.39% |
