Jan ( N = 83 )

Feb ( N = 90 )

Mar ( N = 247 )

Apr ( N = 177 )

May ( N = 241 )

Jun ( N = 197 )

Jul ( N = 217 )

Aug ( N = 202 )

Sep ( N = 228 )

Oct ( N = 232 )

Nov ( N = 239 )

Dec ( N = 247 )