Jan ( N = 340 )

Feb ( N = 362 )

Mar ( N = 434 )

Apr ( N = 466 )

May ( N = 482 )

Jun ( N = 459 )

Jul ( N = 475 )

Aug ( N = 453 )

Sep ( N = 468 )

Oct ( N = 492 )

Nov ( N = 474 )

Dec ( N = 490 )