Jan ( N = 124 )

Feb ( N = 112 )

Mar ( N = 218 )

Apr ( N = 469 )

May ( N = 480 )

Jun ( N = 478 )

Jul ( N = 479 )

Aug ( N = 495 )

Sep ( N = 480 )

Oct ( N = 354 )

Nov ( N = 120 )

Dec ( N = 124 )