Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 100 | Kilograms | NA |
| 2003 | 110 | Kilograms | 10.00% |
| 2004 | 150 | Kilograms | 36.36% |
| 2005 | 424 | Kilograms | 182.67% |
| 2006 | 1210 | Kilograms | 185.38% |
| 2007 | 2065 | Kilograms | 70.66% |
| 2008 | 198 | Kilograms | -90.41% |
| 2009 | 150 | Kilograms | -24.24% |
| 2010 | 300 | Kilograms | 100.00% |
| 2011 | 500 | Kilograms | 66.67% |
| 2012 | 400 | Kilograms | -20.00% |
