Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 5800 | Metric tons of contained vanadium | NA |
| 2004 | 10900 | Metric tons of contained vanadium | 87.93% |
| 2005 | 15100 | Metric tons of contained vanadium | 38.53% |
| 2006 | 15100 | Metric tons of contained vanadium | 0.00% |
| 2007 | 14500 | Metric tons of contained vanadium | -3.97% |
| 2009 | 14500 | Metric tons of contained vanadium | 0.00% |
| 2010 | 15000 | Metric tons of contained vanadium | 3.45% |
| 2011 | 12860 | Metric tons of contained vanadium | -14.27% |
| 2012 | 14856 | Metric tons of contained vanadium | 15.52% |
| 2013 | 15000 | Metric tons of contained vanadium | 0.97% |
