Jan ( N = 89 )

Feb ( N = 72 )

Mar ( N = 235 )

Apr ( N = 237 )

May ( N = 228 )

Jun ( N = 182 )

Jul ( N = 187 )

Aug ( N = 191 )

Sep ( N = 224 )

Oct ( N = 234 )

Nov ( N = 157 )

Dec ( N = 243 )