Objective-C
#1 132
#2 80
#3 19
#4 9
#5 9
#6 4
#7 3
#8 3
#9 2
#10 2
#11 1
#12 1
#13 1
#14 1
#15 1
#16 1
#17 1
#18 1
#19 1
#20 1