Jan ( N = 540 )

Feb ( N = 603 )

Mar ( N = 642 )

Apr ( N = 472 )

May ( N = 330 )

Jun ( N = 483 )

Jul ( N = 582 )

Aug ( N = 483 )

Sep ( N = 655 )

Oct ( N = 468 )

Nov ( N = 622 )

Dec ( N = 668 )