Jan ( N = 87 )

Feb ( N = 91 )

Mar ( N = 246 )

Apr ( N = 178 )

May ( N = 235 )

Jun ( N = 205 )

Jul ( N = 221 )

Aug ( N = 211 )

Sep ( N = 224 )

Oct ( N = 234 )

Nov ( N = 235 )

Dec ( N = 244 )