Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 10 | Kilograms | NA |
| 2003 | 2 | Kilograms | -80.00% |
| 2005 | 10 | Kilograms | 400.00% |
| 2006 | 15 | Kilograms | 50.00% |
| 2007 | 17 | Kilograms | 13.33% |
| 2008 | 40 | Kilograms | 135.29% |
| 2009 | 30 | Kilograms | -25.00% |
| 2010 | 3 | Kilograms | -90.00% |
| 2011 | 3 | Kilograms | 0.00% |
| 2012 | 3 | Kilograms | 0.00% |
