Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
Year | Production | Unit of Measure | % Change |
2003 | 60000 | Metric tons | NA |
2004 | 60000 | Metric tons | 0.00 % |
2005 | 60000 | Metric tons | 0.00 % |
2006 | 60000 | Metric tons | 0.00 % |
2007 | 60000 | Metric tons | 0.00 % |
2008 | 60000 | Metric tons | 0.00 % |
2009 | 60000 | Metric tons | 0.00 % |
2010 | 60000 | Metric tons | 0.00 % |
2011 | 60000 | Metric tons | 0.00 % |
2012 | 60000 | Metric tons | 0.00 % |
2013 | 60000 | Metric tons | 0.00 % |