Jan ( N = 332 )

Feb ( N = 300 )

Mar ( N = 321 )

Apr ( N = 327 )

May ( N = 312 )

Jun ( N = 317 )

Jul ( N = 337 )

Aug ( N = 341 )

Sep ( N = 294 )

Oct ( N = 519 )

Nov ( N = 504 )

Dec ( N = 520 )