Jan ( N = 310 )

Feb ( N = 279 )

Mar ( N = 309 )

Apr ( N = 293 )

May ( N = 305 )

Jun ( N = 230 )

Jul ( N = 295 )

Aug ( N = 310 )

Sep ( N = 298 )

Oct ( N = 295 )

Nov ( N = 298 )

Dec ( N = 302 )