Jan ( N = 556 )

Feb ( N = 502 )

Mar ( N = 550 )

Apr ( N = 537 )

May ( N = 555 )

Jun ( N = 535 )

Jul ( N = 553 )

Aug ( N = 552 )

Sep ( N = 537 )

Oct ( N = 430 )

Nov ( N = 502 )

Dec ( N = 466 )