Jan ( N = 308 )

Feb ( N = 256 )

Mar ( N = 304 )

Apr ( N = 288 )

May ( N = 310 )

Jun ( N = 289 )

Jul ( N = 306 )

Aug ( N = 308 )

Sep ( N = 298 )

Oct ( N = 305 )

Nov ( N = 299 )

Dec ( N = 290 )