Jan ( N = 2976 )

Feb ( N = 2406 )

Mar ( N = 2977 )

Apr ( N = 2881 )

May ( N = 2974 )

Jun ( N = 2880 )

Jul ( N = 2976 )

Aug ( N = 2975 )

Sep ( N = 2881 )

Oct ( N = 2978 )

Nov ( N = 2880 )

Dec ( N = 2976 )