Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 33600 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2003 | 37100 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 10.42 % |
| 2004 | 43400 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 16.98 % |
| 2005 | 47250 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 8.87 % |
| 2006 | 32100 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -32.06 % |
| 2007 | 32921 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 2.56 % |
| 2008 | 17811 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -45.90 % |
| 2009 | 34000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 90.89 % |
