Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 269 | Metric tons, cobalt content | NA |
| 2003 | 294 | Metric tons, cobalt content | 9.29% |
| 2004 | 223 | Metric tons, cobalt content | -24.15% |
| 2005 | 326 | Metric tons, cobalt content | 46.19% |
| 2006 | 303 | Metric tons, cobalt content | -7.06% |
| 2007 | 242 | Metric tons, cobalt content | -20.13% |
| 2008 | 337 | Metric tons, cobalt content | 39.26% |
| 2009 | 342 | Metric tons, cobalt content | 1.48% |
| 2010 | 272 | Metric tons, cobalt content | -20.47% |
| 2011 | 149 | Metric tons, cobalt content | -45.22% |
| 2012 | 195 | Metric tons, cobalt content | 30.87% |
