Jan ( N = 84 )

Feb ( N = 59 )

Mar ( N = 240 )

Apr ( N = 186 )

May ( N = 152 )

Jun ( N = 134 )

Jul ( N = 127 )

Aug ( N = 90 )

Sep ( N = 221 )

Oct ( N = 228 )

Nov ( N = 243 )

Dec ( N = 246 )