Jan ( N = 300 )

Feb ( N = 300 )

Mar ( N = 380 )

Apr ( N = 404 )

May ( N = 476 )

Jun ( N = 425 )

Jul ( N = 459 )

Aug ( N = 355 )

Sep ( N = 379 )

Oct ( N = 333 )

Nov ( N = 287 )

Dec ( N = 233 )