Jan ( N = 87 )

Feb ( N = 76 )

Mar ( N = 240 )

Apr ( N = 237 )

May ( N = 240 )

Jun ( N = 186 )

Jul ( N = 189 )

Aug ( N = 202 )

Sep ( N = 225 )

Oct ( N = 232 )

Nov ( N = 162 )

Dec ( N = 247 )