Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 35000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2003 | 39000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 11.43% |
| 2004 | 37000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -5.13% |
| 2005 | 40500 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 9.46% |
| 2006 | 35700 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -11.85% |
| 2007 | 38900 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 8.96% |
| 2008 | 27800 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -28.53% |
| 2009 | 30233 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 8.75% |
| 2010 | 55562 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 83.78% |
| 2011 | 64115 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 15.39% |
| 2012 | 51467 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -19.73% |
