Which year did more voters in Dunklin County vote for the Missouri Constitutional Amendment 2, 2004 or 2006?
return voters ;return #1 in  Dunklin County ;return #2 that vote for Missouri Constitutional Amendment 2 ;return #3 in  2004 ;return #3 in  2006 ;return number of  #4 ;return number of  #5 ;return which is more of #6 ,  #7
['select', 'filter', 'filter', 'filter', 'filter', 'aggregate', 'aggregate', 'comparison']