Jan ( N = 303 )

Feb ( N = 270 )

Mar ( N = 308 )

Apr ( N = 230 )

May ( N = 197 )

Jun ( N = 267 )

Jul ( N = 278 )

Aug ( N = 281 )

Sep ( N = 285 )

Oct ( N = 307 )

Nov ( N = 289 )

Dec ( N = 307 )