Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
Year | Production | Unit of Measure | % Change |
2002 | 65 | Thousand metric tons | NA |
2003 | 65 | Thousand metric tons | 0.00 % |
2004 | 65 | Thousand metric tons | 0.00 % |
2005 | 65 | Thousand metric tons | 0.00 % |
2006 | 65 | Thousand metric tons | 0.00 % |
2007 | 65 | Thousand metric tons | 0.00 % |
2008 | 65 | Thousand metric tons | 0.00 % |
2009 | 49 | Thousand metric tons | -24.62 % |
2010 | 45 | Thousand metric tons | -8.16 % |
2011 | 74 | Thousand metric tons | 64.44 % |
2012 | 114 | Thousand metric tons | 54.05 % |