Jan ( N = 91 )

Feb ( N = 67 )

Mar ( N = 237 )

Apr ( N = 202 )

May ( N = 147 )

Jun ( N = 143 )

Jul ( N = 121 )

Aug ( N = 87 )

Sep ( N = 226 )

Oct ( N = 236 )

Nov ( N = 233 )

Dec ( N = 247 )