Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 1453 | Metric tons, cobalt content | NA |
| 2003 | 1391 | Metric tons, cobalt content | -4.27% |
| 2004 | 1600 | Metric tons, cobalt content | 15.03% |
| 2005 | 1600 | Metric tons, cobalt content | 0.00% |
| 2006 | 1500 | Metric tons, cobalt content | -6.25% |
| 2007 | 1600 | Metric tons, cobalt content | 6.67% |
| 2008 | 1700 | Metric tons, cobalt content | 6.25% |
| 2009 | 2200 | Metric tons, cobalt content | 29.41% |
| 2010 | 3110 | Metric tons, cobalt content | 41.36% |
| 2011 | 2159 | Metric tons, cobalt content | -30.58% |
| 2012 | 1800 | Metric tons, cobalt content | -16.63% |
