Jan ( N = 51 )

Feb ( N = 52 )

Mar ( N = 36 )

Apr ( N = 32 )

May ( N = 43 )

Jun ( N = 48 )

Jul ( N = 29 )

Aug ( N = 59 )

Sep ( N = 55 )

Oct ( N = 41 )

Nov ( N = 41 )

Dec ( N = 46 )