Jan ( N = 277 )

Feb ( N = 215 )

Mar ( N = 240 )

Apr ( N = 268 )

May ( N = 433 )

Jun ( N = 535 )

Jul ( N = 557 )

Aug ( N = 554 )

Sep ( N = 533 )

Oct ( N = 553 )

Nov ( N = 533 )

Dec ( N = 552 )