Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 36161 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2003 | 33051 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -8.60 % |
| 2004 | 27635 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -16.39 % |
| 2005 | 28841 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 4.36 % |
| 2006 | 36238 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 25.65 % |
| 2007 | 36453 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.59 % |
| 2008 | 40519 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 11.15 % |
| 2009 | 27801 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -31.39 % |
