Jan ( N = 536 )

Feb ( N = 646 )

Mar ( N = 784 )

Apr ( N = 832 )

May ( N = 915 )

Jun ( N = 912 )

Jul ( N = 930 )

Aug ( N = 884 )

Sep ( N = 785 )

Oct ( N = 739 )

Nov ( N = 665 )

Dec ( N = 640 )