How many years was it between when there were 7314 international students of Thai origin studying in the United States and the Global Opinion Poll?
return there  were 7314 international students of Thai origin studying in  the  United States ;return the  Global Opinion Poll ;return year of #1 ;return year of #2 ;return difference of #3 and  #4
['select', 'select', 'project', 'project', 'arithmetic']