Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 216 | Metric tons, tungsten content | NA |
| 2004 | 187 | Metric tons, tungsten content | -13.43% |
| 2005 | 345 | Metric tons, tungsten content | 84.49% |
| 2006 | 303 | Metric tons, tungsten content | -12.17% |
| 2007 | 477 | Metric tons, tungsten content | 57.43% |
| 2008 | 617 | Metric tons, tungsten content | 29.35% |
| 2009 | 190 | Metric tons, tungsten content | -69.21% |
| 2010 | 300 | Metric tons, tungsten content | 57.89% |
| 2011 | 160 | Metric tons, tungsten content | -46.67% |
| 2012 | 80 | Metric tons, tungsten content | -50.00% |
| 2013 | 100 | Metric tons, tungsten content | 25.00% |
