Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 40 | Metric tons, tungsten content | NA |
| 2004 | 77 | Metric tons, tungsten content | 92.50% |
| 2005 | 78 | Metric tons, tungsten content | 1.30% |
| 2006 | 182 | Metric tons, tungsten content | 133.33% |
| 2007 | 245 | Metric tons, tungsten content | 34.62% |
| 2008 | 142 | Metric tons, tungsten content | -42.04% |
| 2009 | 39 | Metric tons, tungsten content | -72.54% |
| 2010 | 20 | Metric tons, tungsten content | -48.72% |
| 2011 | 13 | Metric tons, tungsten content | -35.00% |
| 2012 | 66 | Metric tons, tungsten content | 407.69% |
