Jan ( N = 70 )

Feb ( N = 53 )

Mar ( N = 72 )

Apr ( N = 62 )

May ( N = 66 )

Jun ( N = 69 )

Jul ( N = 72 )

Aug ( N = 72 )

Sep ( N = 65 )

Oct ( N = 60 )

Nov ( N = 59 )

Dec ( N = 70 )