Jan ( N = 426 )

Feb ( N = 902 )

Mar ( N = 1152 )

Apr ( N = 1138 )

May ( N = 1172 )

Jun ( N = 1132 )

Jul ( N = 1173 )

Aug ( N = 1176 )

Sep ( N = 1138 )

Oct ( N = 1173 )

Nov ( N = 1008 )

Dec ( N = 781 )