Jan ( N = 55 )

Feb ( N = 59 )

Mar ( N = 243 )

Apr ( N = 181 )

May ( N = 236 )

Jun ( N = 206 )

Jul ( N = 222 )

Aug ( N = 212 )

Sep ( N = 220 )

Oct ( N = 233 )

Nov ( N = 235 )

Dec ( N = 245 )