Show institution types, along with the number of institutions and total enrollment for each type.
return institution types ;return institutions of #1 ;return number of  #2 for each #1 ;return enrollments of #2 ;return sum of #4 for each #1 ;return #1 ,  #3 ,   #5
['select', 'project', 'group', 'project', 'group', 'union']