Jan ( N = 88 )

Feb ( N = 78 )

Mar ( N = 236 )

Apr ( N = 236 )

May ( N = 228 )

Jun ( N = 181 )

Jul ( N = 185 )

Aug ( N = 192 )

Sep ( N = 221 )

Oct ( N = 232 )

Nov ( N = 157 )

Dec ( N = 243 )