Jan ( N = 14 )

Feb ( N = 116 )

Mar ( N = 168 )

Apr ( N = 165 )

May ( N = 176 )

Jun ( N = 180 )

Jul ( N = 183 )

Aug ( N = 188 )

Sep ( N = 181 )

Oct ( N = 188 )

Nov ( N = 177 )

Dec ( N = 187 )