Jan ( N = 74 )

Feb ( N = 80 )

Mar ( N = 89 )

Apr ( N = 90 )

May ( N = 36 )

Jun ( N = 36 )

Jul ( N = 51 )

Aug ( N = 72 )

Sep ( N = 50 )

Oct ( N = 64 )

Nov ( N = 89 )

Dec ( N = 93 )