Jan ( N = 556 )

Feb ( N = 501 )

Mar ( N = 550 )

Apr ( N = 527 )

May ( N = 549 )

Jun ( N = 332 )

Jul ( N = 510 )

Aug ( N = 519 )

Sep ( N = 505 )

Oct ( N = 402 )

Nov ( N = 474 )

Dec ( N = 443 )