Jan ( N = 534 )

Feb ( N = 1078 )

Mar ( N = 1140 )

Apr ( N = 1140 )

May ( N = 1155 )

Jun ( N = 1100 )

Jul ( N = 1137 )

Aug ( N = 1178 )

Sep ( N = 1140 )

Oct ( N = 1161 )

Nov ( N = 1099 )

Dec ( N = 1105 )