Jan ( N = 217 )

Feb ( N = 279 )

Mar ( N = 378 )

Apr ( N = 408 )

May ( N = 428 )

Jun ( N = 408 )

Jul ( N = 401 )

Aug ( N = 400 )

Sep ( N = 417 )

Oct ( N = 416 )

Nov ( N = 374 )

Dec ( N = 354 )