Jan ( N = 7 )

Feb ( N = 18 )

Mar ( N = 1203 )

Apr ( N = 1117 )

May ( N = 1190 )

Jun ( N = 1039 )

Jul ( N = 1200 )

Aug ( N = 1166 )

Sep ( N = 1140 )

Oct ( N = 1133 )

Nov ( N = 249 )

Dec ( N = 1 )