Jan ( N = 468 )

Feb ( N = 298 )

Mar ( N = 224 )

Apr ( N = 510 )

May ( N = 527 )

Jun ( N = 428 )

Jul ( N = 474 )

Aug ( N = 380 )

Sep ( N = 300 )

Oct ( N = 422 )

Nov ( N = 305 )

Dec ( N = 420 )