Jan ( N = 91 )

Feb ( N = 78 )

Mar ( N = 237 )

Apr ( N = 234 )

May ( N = 237 )

Jun ( N = 182 )

Jul ( N = 195 )

Aug ( N = 196 )

Sep ( N = 223 )

Oct ( N = 230 )

Nov ( N = 159 )

Dec ( N = 248 )