Jan ( N = 2070 )

Feb ( N = 2344 )

Mar ( N = 2511 )

Apr ( N = 2425 )

May ( N = 2484 )

Jun ( N = 2406 )

Jul ( N = 2507 )

Aug ( N = 2509 )

Sep ( N = 2423 )

Oct ( N = 2507 )

Nov ( N = 2428 )

Dec ( N = 2252 )