Jan ( N = 88 )

Feb ( N = 62 )

Mar ( N = 231 )

Apr ( N = 185 )

May ( N = 136 )

Jun ( N = 129 )

Jul ( N = 99 )

Aug ( N = 72 )

Sep ( N = 221 )

Oct ( N = 236 )

Nov ( N = 236 )

Dec ( N = 246 )