Jan ( N = 90 )

Feb ( N = 94 )

Mar ( N = 231 )

Apr ( N = 168 )

May ( N = 235 )

Jun ( N = 197 )

Jul ( N = 215 )

Aug ( N = 198 )

Sep ( N = 224 )

Oct ( N = 232 )

Nov ( N = 239 )

Dec ( N = 246 )