Jan ( N = 435 )

Feb ( N = 434 )

Mar ( N = 487 )

Apr ( N = 465 )

May ( N = 475 )

Jun ( N = 479 )

Jul ( N = 484 )

Aug ( N = 492 )

Sep ( N = 478 )

Oct ( N = 496 )

Nov ( N = 470 )

Dec ( N = 496 )