Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 37325 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2003 | 29839 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -20.06% |
| 2004 | 27220 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -8.78% |
| 2005 | 30227 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 11.05% |
| 2006 | 29808 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -1.39% |
| 2007 | 27025 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -9.34% |
| 2008 | 30349 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 12.30% |
| 2009 | 31869 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 5.01% |
| 2010 | 32566 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 2.19% |
| 2011 | 33975 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 4.33% |
| 2012 | 42000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 23.62% |
