Jan ( N = 630 )

Feb ( N = 559 )

Mar ( N = 620 )

Apr ( N = 630 )

May ( N = 647 )

Jun ( N = 629 )

Jul ( N = 607 )

Aug ( N = 621 )

Sep ( N = 611 )

Oct ( N = 648 )

Nov ( N = 625 )

Dec ( N = 659 )