Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 5660 | Metric tons, lead content | NA |
| 2004 | 5512 | Metric tons, lead content | -2.61% |
| 2005 | 3437 | Metric tons, lead content | -37.65% |
| 2006 | 777 | Metric tons, lead content | -77.39% |
