Jan ( N = 1004 )

Feb ( N = 957 )

Mar ( N = 1013 )

Apr ( N = 1074 )

May ( N = 1175 )

Jun ( N = 1100 )

Jul ( N = 1162 )

Aug ( N = 1171 )

Sep ( N = 1134 )

Oct ( N = 1176 )

Nov ( N = 1118 )

Dec ( N = 1175 )