In which year were there less people without a car, 2015 or 2016?
return people without a car ;return #1 In 2015 ;return #1 In 2016 ;return number of  #2 ;return number of  #3 ;return which is lowest of #4 ,  #5
['select', 'filter', 'filter', 'aggregate', 'aggregate', 'comparison']