Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
Year | Production | Unit of Measure | % Change |
2003 | 1351 | Metric tons | NA |
2004 | 1900 | Metric tons | 40.64% |
2005 | 2000 | Metric tons | 5.26% |
2006 | 2000 | Metric tons | 0.00% |
2007 | 2100 | Metric tons | 5.00% |
2008 | 2100 | Metric tons | 0.00% |
2009 | 1300 | Metric tons | -38.10% |
2010 | 1400 | Metric tons | 7.69% |
2011 | 1300 | Metric tons | -7.14% |
2012 | 1200 | Metric tons | -7.69% |
2013 | 1200 | Metric tons | 0.00% |