Jan ( N = 457 )

Feb ( N = 402 )

Mar ( N = 445 )

Apr ( N = 438 )

May ( N = 473 )

Jun ( N = 479 )

Jul ( N = 483 )

Aug ( N = 494 )

Sep ( N = 477 )

Oct ( N = 495 )

Nov ( N = 452 )

Dec ( N = 478 )