Jan ( N = 2449 )

Feb ( N = 2673 )

Mar ( N = 2477 )

Apr ( N = 2879 )

May ( N = 2968 )

Jun ( N = 2874 )

Jul ( N = 2840 )

Aug ( N = 2563 )

Sep ( N = 1691 )

Oct ( N = 2687 )

Nov ( N = 2508 )

Dec ( N = 2380 )