Jan ( N = 88 )

Feb ( N = 75 )

Mar ( N = 237 )

Apr ( N = 235 )

May ( N = 229 )

Jun ( N = 181 )

Jul ( N = 187 )

Aug ( N = 191 )

Sep ( N = 221 )

Oct ( N = 232 )

Nov ( N = 155 )

Dec ( N = 245 )