Jan ( N = 610 )

Feb ( N = 573 )

Mar ( N = 622 )

Apr ( N = 611 )

May ( N = 621 )

Jun ( N = 585 )

Jul ( N = 615 )

Aug ( N = 638 )

Sep ( N = 617 )

Oct ( N = 591 )

Nov ( N = 635 )

Dec ( N = 682 )