Jan ( N = 426 )

Feb ( N = 832 )

Mar ( N = 1177 )

Apr ( N = 1140 )

May ( N = 1177 )

Jun ( N = 1135 )

Jul ( N = 1178 )

Aug ( N = 1174 )

Sep ( N = 1124 )

Oct ( N = 1178 )

Nov ( N = 1140 )

Dec ( N = 1176 )