Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
Year | Production | Unit of Measure | % Change |
2003 | 7675 | Metric tons | NA |
2004 | 10267 | Metric tons | 33.77% |
2005 | 4298 | Metric tons | -58.14% |
2006 | 6588 | Metric tons | 53.28% |
2007 | 6000 | Metric tons | -8.93% |
2008 | 5000 | Metric tons | -16.67% |
2009 | 2463 | Metric tons | -50.74% |
2010 | 4000 | Metric tons | 62.40% |
2011 | 7000 | Metric tons | 75.00% |
2012 | 6000 | Metric tons | -14.29% |
2013 | 4000 | Metric tons | -33.33% |