Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2004 | 850 | Metric tons, lead content | NA |
| 2005 | 1000 | Metric tons, lead content | 17.65% |
| 2006 | 1000 | Metric tons, lead content | 0.00% |
| 2007 | 4000 | Metric tons, lead content | 300.00% |
| 2008 | 3300 | Metric tons, lead content | -17.50% |
| 2009 | 2100 | Metric tons, lead content | -36.36% |
| 2010 | 3200 | Metric tons, lead content | 52.38% |
| 2011 | 3700 | Metric tons, lead content | 15.63% |
| 2012 | 3700 | Metric tons, lead content | 0.00% |
