Jan ( N = 89 )

Feb ( N = 75 )

Mar ( N = 237 )

Apr ( N = 237 )

May ( N = 228 )

Jun ( N = 181 )

Jul ( N = 187 )

Aug ( N = 194 )

Sep ( N = 225 )

Oct ( N = 233 )

Nov ( N = 157 )

Dec ( N = 245 )