Jan ( N = 2071 )

Feb ( N = 2342 )

Mar ( N = 2511 )

Apr ( N = 2429 )

May ( N = 2483 )

Jun ( N = 2405 )

Jul ( N = 2506 )

Aug ( N = 2508 )

Sep ( N = 2423 )

Oct ( N = 2507 )

Nov ( N = 2427 )

Dec ( N = 2248 )