Jan ( N = 417 )

Feb ( N = 413 )

Mar ( N = 477 )

Apr ( N = 472 )

May ( N = 492 )

Jun ( N = 466 )

Jul ( N = 479 )

Aug ( N = 480 )

Sep ( N = 472 )

Oct ( N = 490 )

Nov ( N = 474 )

Dec ( N = 490 )