Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 800 | Kilograms | NA |
| 2003 | 1000 | Kilograms | 25.00% |
| 2004 | 1000 | Kilograms | 0.00% |
| 2005 | 1200 | Kilograms | 20.00% |
| 2006 | 1200 | Kilograms | 0.00% |
| 2007 | 400 | Kilograms | -66.67% |
| 2008 | 400 | Kilograms | 0.00% |
| 2009 | 400 | Kilograms | 0.00% |
| 2010 | 400 | Kilograms | 0.00% |
| 2011 | 400 | Kilograms | 0.00% |
| 2012 | 350 | Kilograms | -12.50% |
| 2013 | 300 | Kilograms | -14.29% |
