Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 2000 | Metric tons, lead content | NA |
| 2004 | 2000 | Metric tons, lead content | 0.00% |
| 2005 | 1000 | Metric tons, lead content | -50.00% |
| 2006 | 1000 | Metric tons, lead content | 0.00% |
| 2007 | 1000 | Metric tons, lead content | 0.00% |
| 2008 | 1600 | Metric tons, lead content | 60.00% |
| 2009 | 1800 | Metric tons, lead content | 12.50% |
| 2010 | 2000 | Metric tons, lead content | 11.11% |
| 2011 | 1800 | Metric tons, lead content | -10.00% |
| 2012 | 1800 | Metric tons, lead content | 0.00% |
