| | 2004 | | | Rank | Provinces | case | | 1 | Loei | 0 | | 2 | Mae Hong Son | 0 | | 3 | Nan | 0 | | 4 | Sukhothai | 1 | | 5 | Amnat Charoen | 2 | | 6 | Nong Bua Lam Phu | 2 | | 7 | Phayao | 2 | | 8 | Roi Et | 2 | | 9 | Sakon Nakhon | 2 | | 10 | Si Sa Ket | 2 | | | Whole Kingdom | 3,184 |
| | | 2005 | | | Rank | Provinces | case | | 1 | Mae Hong Son | 0 | | 2 | Nong Khai | 0 | | 3 | Phrae | 0 | | 4 | Yasothon | 0 | | 5 | Nan | 1 | | 6 | Phayao | 1 | | 7 | Uthai Thani | 1 | | 8 | Amnat Charoen | 2 | | 9 | Kamphaeng Phet | 2 | | 10 | Lamphun | 2 | | 11 | Mukdahan | 2 | | 12 | Roi Et | 2 | | | Whole Kingdom | 2,813 |
| | | 2006 | | | Rank | Provinces | case | | 1 | Mae Hong Son | 0 | | 2 | Nan | 0 | | 3 | Narathiwat | 0 | | 4 | Roi Et | 0 | | 5 | Trat | 0 | | 6 | Nong Khai | 1 | | 7 | Phrae | 1 | | 8 | Lampang | 2 | | 9 | Loei | 2 | | 10 | Sukhothai | 2 | | 11 | Uttaradit | 2 | | | Whole Kingdom | 2,835 |
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