Jan ( N = 68 )

Feb ( N = 70 )

Mar ( N = 66 )

Apr ( N = 60 )

May ( N = 60 )

Jun ( N = 61 )

Jul ( N = 62 )

Aug ( N = 75 )

Sep ( N = 74 )

Oct ( N = 75 )

Nov ( N = 62 )

Dec ( N = 69 )