Jan ( N = 86 )

Feb ( N = 63 )

Mar ( N = 234 )

Apr ( N = 182 )

May ( N = 137 )

Jun ( N = 141 )

Jul ( N = 116 )

Aug ( N = 78 )

Sep ( N = 221 )

Oct ( N = 235 )

Nov ( N = 235 )

Dec ( N = 246 )