Jan ( N = 280 )

Feb ( N = 365 )

Mar ( N = 400 )

Apr ( N = 297 )

May ( N = 293 )

Jun ( N = 266 )

Jul ( N = 357 )

Aug ( N = 374 )

Sep ( N = 227 )

Oct ( N = 118 )

Nov ( N = 347 )

Dec ( N = 549 )