Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
Year | Production | Unit of Measure | % Change |
2006 | 0.616999983787537 | Thousand metric tons | NA |
2007 | 4.45800018310547 | Thousand metric tons | 622.53% |
2008 | 4 | Thousand metric tons | -10.27% |
2009 | 1.93099999427795 | Thousand metric tons | -51.73% |
2010 | 0.555999994277954 | Thousand metric tons | -71.21% |
2011 | 0.698000013828278 | Thousand metric tons | 25.54% |
2012 | 0.593999981880188 | Thousand metric tons | -14.90% |
2013 | 0.600000023841858 | Thousand metric tons | 1.01% |