Jan ( N = 306 )

Feb ( N = 446 )

Mar ( N = 494 )

Apr ( N = 478 )

May ( N = 496 )

Jun ( N = 446 )

Jul ( N = 492 )

Aug ( N = 352 )

Sep ( N = 478 )

Oct ( N = 489 )

Nov ( N = 480 )

Dec ( N = 494 )