Jan ( N = 398 )

Feb ( N = 392 )

Mar ( N = 419 )

Apr ( N = 352 )

May ( N = 427 )

Jun ( N = 412 )

Jul ( N = 520 )

Aug ( N = 529 )

Sep ( N = 537 )

Oct ( N = 533 )

Nov ( N = 508 )

Dec ( N = 523 )