Objective-C
#1 187
#2 59
#3 41
#4 21
#5 20
#6 14
#7 8
#8 5
#9 5
#10 3
#11 3
#12 2
#13 1
#14 1
#15 1
#16 1
#17 1
#18 1
#19 1
#20 1