Jan ( N = 90 )

Feb ( N = 78 )

Mar ( N = 236 )

Apr ( N = 237 )

May ( N = 228 )

Jun ( N = 180 )

Jul ( N = 188 )

Aug ( N = 195 )

Sep ( N = 223 )

Oct ( N = 233 )

Nov ( N = 157 )

Dec ( N = 246 )