Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 650 | Thousand metric tons of K | NA |
| 2004 | 770 | Thousand metric tons of K | 18.46% |
| 2005 | 1500 | Thousand metric tons of K | 94.81% |
| 2006 | 1800 | Thousand metric tons of K | 20.00% |
| 2007 | 2600 | Thousand metric tons of K | 44.44% |
| 2008 | 2750 | Thousand metric tons of K | 5.77% |
| 2009 | 3200 | Thousand metric tons of K | 16.36% |
| 2010 | 3600 | Thousand metric tons of K | 12.50% |
| 2011 | 3800 | Thousand metric tons of K | 5.56% |
| 2012 | 4100 | Thousand metric tons of K | 7.89% |
