Jan ( N = 1127 )

Feb ( N = 1060 )

Mar ( N = 1171 )

Apr ( N = 1139 )

May ( N = 1148 )

Jun ( N = 1018 )

Jul ( N = 1031 )

Aug ( N = 1049 )

Sep ( N = 1066 )

Oct ( N = 745 )

Mar ( N = None )

Apr ( N = 987 )

May ( N = 1050 )

Jun ( N = 1104 )

Jul ( N = 1077 )

Aug ( N = 1027 )

Sep ( N = 1042 )

Oct ( N = 1168 )

Nov ( N = 1138 )

Dec ( N = 1051 )