Jan ( N = 493 )

Feb ( N = 424 )

Mar ( N = 457 )

Apr ( N = 476 )

May ( N = 495 )

Jun ( N = 466 )

Jul ( N = 486 )

Aug ( N = 494 )

Sep ( N = 469 )

Oct ( N = 473 )

Nov ( N = 449 )

Dec ( N = 489 )