Jan ( N = 250 )

Feb ( N = 248 )

Mar ( N = 278 )

Apr ( N = 265 )

May ( N = 279 )

Jun ( N = 269 )

Jul ( N = 279 )

Aug ( N = 224 )

Sep ( N = 297 )

Oct ( N = 302 )

Nov ( N = 240 )

Dec ( N = 306 )