Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 15747 | Metric tons, lead content | NA |
| 2004 | 18297 | Metric tons, lead content | 16.19 % |
| 2005 | 11610 | Metric tons, lead content | -36.55 % |
| 2006 | 6269 | Metric tons, lead content | -46.00 % |
| 2007 | 1000 | Metric tons, lead content | -84.05 % |
