Region | Site | | | | | Year | | | | |
---|
| | 1997 | 1998 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | Ref |
---|
West | Mae Hong Son | | | | | | 103 | 189 | | |
West | Tak | 36 | | 41 | 68 | 45 | 32 | 23 | 30 | [32, 33] |
West | Kanchanaburi | | | | | | 32 | | 38 | |
West | Ratchaburi | | | | | | 81 | 57 | | |
West | Ranong | | | | 37 | 43 | 7 | 14 | 59 | |
East | Chanthaburi | | | 33 | 44 | 4 | 6 | 3 | | [33] |
East | Trat | 53 | 37 | 72 | 44 | 15 | 20 | 31 | 30 | [33] |
| Total | 89 | 37 | 146 | 193 | 103 | 281 | 317 | 157 | |