Jan ( N = 315 )

Feb ( N = 312 )

Mar ( N = 355 )

Apr ( N = 395 )

May ( N = 465 )

Jun ( N = 422 )

Jul ( N = 430 )

Aug ( N = 442 )

Sep ( N = 400 )

Oct ( N = 366 )

Nov ( N = 310 )

Dec ( N = 277 )