Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
Year | Production | Unit of Measure | % Change |
2003 | 2100 | Metric tons | NA |
2004 | 7500 | Metric tons | 257.14% |
2005 | 672 | Metric tons | -91.04% |
2006 | 1000 | Metric tons | 48.81% |
2007 | 2000 | Metric tons | 100.00% |
2008 | 2000 | Metric tons | 0.00% |
2009 | 15396 | Metric tons | 669.80% |
2011 | 40000 | Metric tons | 159.81% |
2012 | 20000 | Metric tons | -50.00% |