Jan ( N = 92 )

Feb ( N = 79 )

Mar ( N = 235 )

Apr ( N = 232 )

May ( N = 235 )

Jun ( N = 178 )

Jul ( N = 194 )

Aug ( N = 193 )

Sep ( N = 220 )

Oct ( N = 231 )

Nov ( N = 158 )

Dec ( N = 246 )