Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
Year | Production | Unit of Measure | % Change |
2006 | 910 | Metric tons | NA |
2007 | 500 | Metric tons | -45.05% |
2008 | 4372 | Metric tons | 774.40% |
2009 | 22390 | Metric tons | 412.12% |
2010 | 1000 | Metric tons | -95.53% |