Jan ( N = 35 )

Feb ( N = 48 )

Mar ( N = 236 )

Apr ( N = 180 )

May ( N = 236 )

Jun ( N = 205 )

Jul ( N = 221 )

Aug ( N = 214 )

Sep ( N = 223 )

Oct ( N = 233 )

Nov ( N = 236 )

Dec ( N = 243 )