Jan ( N = 1129 )

Feb ( N = 1061 )

Mar ( N = 1171 )

Apr ( N = 1139 )

May ( N = 1147 )

Jun ( N = 1019 )

Jul ( N = 1038 )

Aug ( N = 1054 )

Sep ( N = 1069 )

Oct ( N = 817 )

Mar ( N = None )

Apr ( N = 988 )

May ( N = 1057 )

Jun ( N = 1103 )

Jul ( N = 1078 )

Aug ( N = 1030 )

Sep ( N = 1054 )

Oct ( N = 1168 )

Nov ( N = 1138 )

Dec ( N = 1053 )