Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 5465 | Thousand metric tons of K | NA |
| 2004 | 6405 | Thousand metric tons of K | 17.20% |
| 2005 | 7131 | Thousand metric tons of K | 11.33% |
| 2006 | 6610 | Thousand metric tons of K | -7.31% |
| 2007 | 7275 | Thousand metric tons of K | 10.06% |
| 2008 | 5992.39990234375 | Thousand metric tons of K | -17.63% |
| 2009 | 3727 | Thousand metric tons of K | -37.80% |
| 2010 | 6283 | Thousand metric tons of K | 68.58% |
| 2011 | 6498 | Thousand metric tons of K | 3.42% |
| 2012 | 5472 | Thousand metric tons of K | -15.79% |
