Jan ( N = 301 )

Feb ( N = 250 )

Mar ( N = 299 )

Apr ( N = 299 )

May ( N = 310 )

Jun ( N = 300 )

Jul ( N = 365 )

Aug ( N = 558 )

Sep ( N = 540 )

Oct ( N = 558 )

Nov ( N = 540 )

Dec ( N = 558 )