Jan ( N = 312 )

Feb ( N = 289 )

Mar ( N = 298 )

Apr ( N = 319 )

May ( N = 281 )

Jun ( N = 306 )

Jul ( N = 280 )

Aug ( N = 334 )

Sep ( N = 304 )

Oct ( N = 271 )

Nov ( N = 284 )

Dec ( N = 318 )