Did Russia or Western/Central Europe show the greatest unit increase from 2005 to 2007?
return unit increases ;return #1 from  2005 ;return #2 to 2007 ;return #3 of Russia ;return #3 of Western/Central Europe ;return which is highest of #4 ,  #5
['select', 'filter', 'filter', 'filter', 'filter', 'comparison']