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% |
| 2010 | 25529 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -24.91% |
| 2011 | 18252 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -28.50% |
| 2012 | 31000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 69.84% |
