Jan ( N = 7 )

Feb ( N = 143 )

Mar ( N = 306 )

Apr ( N = 528 )

May ( N = 749 )

Jun ( N = 750 )

Jul ( N = 777 )

Aug ( N = 774 )

Sep ( N = 747 )

Oct ( N = 771 )

Nov ( N = 612 )

Dec ( N = 443 )