Jan ( N = 1023 )

Feb ( N = 919 )

Mar ( N = 1032 )

Apr ( N = 1007 )

May ( N = 1029 )

Jun ( N = 952 )

Jul ( N = 1003 )

Aug ( N = 1026 )

Sep ( N = 956 )

Oct ( N = 1030 )

Nov ( N = 908 )

Dec ( N = 1021 )