Jan ( N = 13 )

Feb ( N = 119 )

Mar ( N = 167 )

Apr ( N = 163 )

May ( N = 174 )

Jun ( N = 180 )

Jul ( N = 182 )

Aug ( N = 186 )

Sep ( N = 180 )

Oct ( N = 186 )

Nov ( N = 176 )

Dec ( N = 186 )