Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 1 | Metric tons, tungsten content | NA |
| 2004 | 52 | Metric tons, tungsten content | 5,100.00% |
| 2005 | 36 | Metric tons, tungsten content | -30.77% |
| 2006 | 75 | Metric tons, tungsten content | 108.33% |
| 2007 | 86 | Metric tons, tungsten content | 14.67% |
| 2008 | 50 | Metric tons, tungsten content | -41.86% |
| 2009 | 7 | Metric tons, tungsten content | -86.00% |
| 2010 | 44 | Metric tons, tungsten content | 528.57% |
| 2011 | 8 | Metric tons, tungsten content | -81.82% |
| 2012 | 21 | Metric tons, tungsten content | 162.50% |
| 2013 | 20 | Metric tons, tungsten content | -4.76% |
