Jan ( N = 53 )

Feb ( N = 77 )

Mar ( N = 237 )

Apr ( N = 234 )

May ( N = 238 )

Jun ( N = 181 )

Jul ( N = 196 )

Aug ( N = 198 )

Sep ( N = 226 )

Oct ( N = 232 )

Nov ( N = 159 )

Dec ( N = 246 )