Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
Year | Production | Unit of Measure | % Change |
2008 | 25.9260005950928 | Thousand metric tons | NA |
2009 | 31.9190006256104 | Thousand metric tons | 23.12% |
2010 | 30 | Thousand metric tons | -6.01% |
2011 | 30 | Thousand metric tons | 0.00% |
2012 | 30 | Thousand metric tons | 0.00% |
2013 | 30 | Thousand metric tons | 0.00% |