Jan ( N = 2074 )

Feb ( N = 2338 )

Mar ( N = 2511 )

Apr ( N = 2427 )

May ( N = 2473 )

Jun ( N = 2406 )

Jul ( N = 2506 )

Aug ( N = 2510 )

Sep ( N = 2422 )

Oct ( N = 2504 )

Nov ( N = 2429 )

Dec ( N = 2255 )