See quarterly data from 2009 till second quarter of 2015 at bottom of this page. 2013 saw the highest number of arrivals yet at 26.7 million arrivals.
During 2014 arrivals decreased to 24.78 million (-6.66%).
(Arrivals decreased by 10,28 % in the first three quarters of 2014. The end of 2014, saw an increase in arrivals, compared with the previous year)
Arrivals increased to 7.876.726 in the first quarter of 2015, up 23.5% from the corresponding quarter in 2014 (at time of political unrest). An even stronger upward trend was seen in the second quarter with arrivals increasing from 5.1 million in 2014 to 7 million in 2015 (+37.5%). However, there is concern that the terrorist bombing at the Erawan Shrine in Bangkok, causing 20 casualties, will have a negative effect during the last 5 months of the year.