Jan ( N = 83 )

Feb ( N = 87 )

Mar ( N = 242 )

Apr ( N = 173 )

May ( N = 235 )

Jun ( N = 198 )

Jul ( N = 224 )

Aug ( N = 205 )

Sep ( N = 222 )

Oct ( N = 231 )

Nov ( N = 236 )

Dec ( N = 247 )