Jan ( N = 82 )

Feb ( N = 57 )

Mar ( N = 240 )

Apr ( N = 178 )

May ( N = 145 )

Jun ( N = 133 )

Jul ( N = 122 )

Aug ( N = 89 )

Sep ( N = 220 )

Oct ( N = 229 )

Nov ( N = 242 )

Dec ( N = 247 )