How many ranks did the Thailand fall on the IMD Global Competitiveness Scoreboard in 2006 from 2005?
return Thailand ;return the  IMD Global Competitiveness Scoreboard ranks of #1 ;return #2 in  2006 ;return #2 in  2005 ;return the  difference of #3 and  #4
['select', 'project', 'filter', 'filter', 'arithmetic']