Jan ( N = 1027 )

Feb ( N = 1023 )

Mar ( N = 988 )

Apr ( N = 1140 )

May ( N = 1035 )

Jun ( N = 1139 )

Jul ( N = 1179 )

Aug ( N = 1172 )

Sep ( N = 1140 )

Oct ( N = 1177 )

Nov ( N = 1115 )

Dec ( N = 849 )