Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 3600 | Metric tons, tungsten content | NA |
| 2004 | 2800 | Metric tons, tungsten content | -22.22% |
| 2005 | 2800 | Metric tons, tungsten content | 0.00% |
| 2006 | 2800 | Metric tons, tungsten content | 0.00% |
| 2007 | 3300 | Metric tons, tungsten content | 17.86% |
| 2008 | 3000 | Metric tons, tungsten content | -9.09% |
| 2009 | 2665 | Metric tons, tungsten content | -11.17% |
| 2010 | 2785 | Metric tons, tungsten content | 4.50% |
| 2011 | 3314 | Metric tons, tungsten content | 18.99% |
| 2012 | 3537 | Metric tons, tungsten content | 6.73% |
| 2013 | 3600 | Metric tons, tungsten content | 1.78% |
