Feb ( N = 400 )

Mar ( N = 964 )

Apr ( N = 980 )

May ( N = 1129 )

Jun ( N = 1080 )

Jul ( N = 1141 )

Aug ( N = 1079 )

Sep ( N = 1069 )

Oct ( N = 1151 )

Nov ( N = 1135 )

Dec ( N = 1165 )