Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 1000 | Metric tons, cobalt content | NA |
| 2003 | 700 | Metric tons, cobalt content | -30.00 % |
| 2004 | 1260 | Metric tons, cobalt content | 80.00 % |
| 2005 | 2100 | Metric tons, cobalt content | 66.67 % |
| 2006 | 1840 | Metric tons, cobalt content | -12.38 % |
| 2007 | 6100 | Metric tons, cobalt content | 231.52 % |
| 2008 | 6630 | Metric tons, cobalt content | 8.69 % |
| 2009 | 6000 | Metric tons, cobalt content | -9.50 % |
