Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 9104 | Thousand metric tons of K | NA |
| 2004 | 10100 | Thousand metric tons of K | 10.94% |
| 2005 | 10140 | Thousand metric tons of K | 0.40% |
| 2006 | 8518.400390625 | Thousand metric tons of K | -15.99% |
| 2007 | 11085 | Thousand metric tons of K | 30.13% |
| 2008 | 10455 | Thousand metric tons of K | -5.68% |
| 2009 | 4318 | Thousand metric tons of K | -58.70% |
| 2010 | 9788 | Thousand metric tons of K | 126.68% |
| 2011 | 11055 | Thousand metric tons of K | 12.94% |
| 2012 | 8984 | Thousand metric tons of K | -18.73% |
