| 2000 | 2010 | 2011 | 2012 | |
|---|---|---|---|---|
| Northeastern Region | 5 366,40 | 6 404,80 | 6 473,80 | 6 500,40 |
| Central Region | 3 302,60 | 3 828,50 | 3 936,50 | 3 961,10 |
| Northern Region | 3 283,70 | 3 891,50 | 3 931,50 | 3 941,60 |
| Southern Region | 2 140,50 | 2 637,30 | 2 704,30 | 2 722,60 |
| Bangkok | 2 331,50 | 2 022,40 | 1 965,90 | 1 961,60 |