Jan ( N = 556 )

Feb ( N = 500 )

Mar ( N = 555 )

Apr ( N = 535 )

May ( N = 550 )

Jun ( N = 527 )

Jul ( N = 552 )

Aug ( N = 549 )

Sep ( N = 534 )

Oct ( N = 546 )

Nov ( N = 535 )

Dec ( N = 555 )