Jan ( N = 129 )

Feb ( N = 138 )

Mar ( N = 166 )

Apr ( N = 172 )

May ( N = 177 )

Jun ( N = 217 )

Jul ( N = 226 )

Aug ( N = 219 )

Sep ( N = 219 )

Oct ( N = 227 )

Nov ( N = 219 )

Dec ( N = 151 )