Jan ( N = 42 )

Feb ( N = 31 )

Mar ( N = 23 )

Apr ( N = 6 )

May ( N = 31 )

Jun ( N = 20 )

Jul ( N = 14 )

Aug ( N = 19 )

Sep ( N = 19 )

Oct ( N = 23 )

Nov ( N = 35 )

Dec ( N = 37 )