Jan ( N = 90 )

Feb ( N = 95 )

Mar ( N = 235 )

Apr ( N = 178 )

May ( N = 235 )

Jun ( N = 200 )

Jul ( N = 225 )

Aug ( N = 209 )

Sep ( N = 226 )

Oct ( N = 232 )

Nov ( N = 236 )

Dec ( N = 247 )