Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 100 | Metric tons | NA |
| 2009 | 750 | Metric tons | 650.00% |
| 2010 | 420 | Metric tons | -44.00% |
| 2011 | 925 | Metric tons | 120.24% |
| 2012 | 219 | Metric tons | -76.32% |
| 2013 | 500 | Metric tons | 128.31% |
