| Date - Field | Thailand - Languages |
2009 January Languages | Thai, English (secondary language of the elite), ethnic and regional dialects |
2008 January Languages | Thai, English (secondary language of the elite), ethnic and regional dialects |
2007 January Languages | Thai, English (secondary language of the elite), ethnic and regional dialects |
2006 January Languages | Thai, English (secondary language of the elite), ethnic and regional dialects |
2005 January Languages | Thai, English (secondary language of the elite), ethnic and regional dialects |
2004 January Languages | Thai, English (secondary language of the elite), ethnic and regional dialects |
2003 January Languages | Thai, English (secondary language of the elite), ethnic and regional dialects |
2002 January Languages | Thai, English (secondary language of the elite), ethnic and regional dialects |
2001 January Languages | Thai, English (secondary language of the elite), ethnic and regional dialects |
2000 January Languages | Thai, English (secondary language of the elite), ethnic and regional dialects |