Jan ( N = 524 )

Feb ( N = 450 )

Mar ( N = 421 )

Apr ( N = 414 )

May ( N = 520 )

Jun ( N = 502 )

Jul ( N = 539 )

Aug ( N = 425 )

Sep ( N = 485 )

Oct ( N = 493 )

Nov ( N = 408 )

Dec ( N = 120 )