Jan ( N = 473 )

Feb ( N = 1007 )

Mar ( N = 1176 )

Apr ( N = 1140 )

May ( N = 1178 )

Jun ( N = 1140 )

Jul ( N = 1151 )

Aug ( N = 1167 )

Sep ( N = 1130 )

Oct ( N = 1176 )

Nov ( N = 1102 )

Dec ( N = 1019 )