Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
Year | Production | Unit of Measure | % Change |
2002 | 9465 | Kilograms | NA |
2003 | 7900 | Kilograms | -16.53% |
2004 | 9666 | Kilograms | 22.35% |
2005 | 10480 | Kilograms | 8.42% |
2006 | 11600 | Kilograms | 10.69% |
2007 | 10092 | Kilograms | -13.00% |
2008 | 10100 | Kilograms | 0.08% |
2009 | 11880 | Kilograms | 17.62% |
2010 | 12000 | Kilograms | 1.01% |
2011 | 12000 | Kilograms | 0.00% |
2012 | 12000 | Kilograms | 0.00% |