Jan ( N = 415 )

Feb ( N = 383 )

Mar ( N = 397 )

Apr ( N = 437 )

May ( N = 622 )

Jun ( N = 1020 )

Jul ( N = 1201 )

Aug ( N = 1110 )

Sep ( N = 819 )

Oct ( N = 594 )

Nov ( N = 260 )

Dec ( N = 286 )