From http://worldnews.nbcnews.com/_news/2013/12/03/21728501-thai-police-end-resistance-to-protesters-allow-them-to-advance-on-government-buildings?lite:
"Tourism and Sports Minister Somsak Pureesrisak told reporters a target of 26.5 million tourists for the year may not be met. Tourism contributes 10 percent to Thailand's $620 billion economy."
The article makes no mention of the mongering contribution. Just as well since any number would be little more than a WAG (Wild-Ass-Guess), but that minor detail should prove to be no obstacle to the board's gurus.