Jan ( N = 836 )

Feb ( N = 754 )

Mar ( N = 836 )

Apr ( N = 807 )

May ( N = 837 )

Jun ( N = 803 )

Jul ( N = 810 )

Aug ( N = 837 )

Sep ( N = 567 )

Jan ( N = None )

Feb ( N = 670 )

Mar ( N = 673 )

Apr ( N = 745 )

May ( N = 790 )

Jun ( N = 789 )

Jul ( N = 834 )

Aug ( N = 814 )

Sep ( N = 786 )

Oct ( N = 607 )

Nov ( N = 781 )

Dec ( N = 819 )