Jan ( N = 91 )

Feb ( N = 74 )

Mar ( N = 238 )

Apr ( N = 237 )

May ( N = 227 )

Jun ( N = 180 )

Jul ( N = 188 )

Aug ( N = 194 )

Sep ( N = 225 )

Oct ( N = 234 )

Nov ( N = 156 )

Dec ( N = 246 )