Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2009 | 100 | Metric tons | NA |
| 2010 | 10 | Metric tons | -90.00% |
| 2011 | 378 | Metric tons | 3,680.00% |
| 2012 | 324 | Metric tons | -14.29% |
| 2013 | 160 | Metric tons | -50.62% |
