Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 42000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2003 | 45000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 7.14% |
| 2004 | 40000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -11.11% |
| 2005 | 48000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 20.00% |
| 2006 | 45000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -6.25% |
| 2007 | 46000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 2.22% |
| 2008 | 42000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -8.70% |
| 2009 | 38000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -9.52% |
| 2010 | 36000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -5.26% |
| 2011 | 38000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 5.56% |
| 2012 | 38000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
