Jan ( N = 496 )

Feb ( N = 492 )

Mar ( N = 647 )

Apr ( N = 742 )

May ( N = 840 )

Jun ( N = 860 )

Jul ( N = 862 )

Aug ( N = 803 )

Sep ( N = 687 )

Oct ( N = 633 )

Nov ( N = 521 )

Dec ( N = 505 )