Jan ( N = 261 )

Feb ( N = 200 )

Mar ( N = 417 )

Apr ( N = 457 )

May ( N = 482 )

Jun ( N = 589 )

Jul ( N = 611 )

Aug ( N = 618 )

Sep ( N = 574 )

Oct ( N = 521 )

Nov ( N = 599 )

Dec ( N = 615 )