Jan ( N = 260 )

Feb ( N = 403 )

Mar ( N = 407 )

Apr ( N = 401 )

May ( N = 698 )

Jun ( N = 727 )

Jul ( N = 600 )

Aug ( N = 442 )

Sep ( N = 816 )

Oct ( N = 511 )

Nov ( N = 587 )

Dec ( N = 647 )