Jan ( N = 92 )

Feb ( N = 79 )

Mar ( N = 237 )

Apr ( N = 236 )

May ( N = 228 )

Jun ( N = 180 )

Jul ( N = 187 )

Aug ( N = 192 )

Sep ( N = 222 )

Oct ( N = 234 )

Nov ( N = 155 )

Dec ( N = 242 )