Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 1 | Metric tons | NA |
| 2004 | 2 | Metric tons | 100.00% |
| 2005 | 2 | Metric tons | 0.00% |
| 2006 | 2 | Metric tons | 0.00% |
| 2007 | 2 | Metric tons | 0.00% |
| 2008 | 2 | Metric tons | 0.00% |
| 2009 | 2 | Metric tons | 0.00% |
| 2010 | 32 | Metric tons | 1,500.00% |
| 2011 | 10 | Metric tons | -68.75% |
| 2013 | 40 | Metric tons | 300.00% |
