Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 99 | Metric tons, cobalt content | NA |
| 2003 | 79 | Metric tons, cobalt content | -20.20% |
| 2004 | 59 | Metric tons, cobalt content | -25.32% |
| 2005 | 100 | Metric tons, cobalt content | 69.49% |
| 2006 | 110 | Metric tons, cobalt content | 10.00% |
| 2007 | 100 | Metric tons, cobalt content | -9.09% |
| 2008 | 85 | Metric tons, cobalt content | -15.00% |
| 2009 | 74 | Metric tons, cobalt content | -12.94% |
| 2010 | 79 | Metric tons, cobalt content | 6.76% |
| 2011 | 86 | Metric tons, cobalt content | 8.86% |
| 2012 | 88 | Metric tons, cobalt content | 2.33% |
