Bueng Kan, the 77th province, was newly established on March 23, 2011, separated from Nong Khai province.
| Дата | Значение | Изменение, % |
|---|---|---|
| 2012 | 19,56 | -2,10% |
| 2011 | 19,98 | -0,56% |
| 2010 | 20,09 | 1,31% |
| 2009 | 19,83 | -4,06% |
| 2008 | 20,67 | -1,07% |
| 2007 | 20,89 | 5,39% |
| 2006 | 19,82 | -0,67% |
| 2005 | 19,96 | -1,36% |
| 2004 | 20,23 | -2,64% |
| 2003 | 20,78 |