Jan ( N = 2381 )

Feb ( N = 2156 )

Mar ( N = 2384 )

Apr ( N = 2269 )

May ( N = 2291 )

Jun ( N = 2309 )

Jul ( N = 2323 )

Aug ( N = 2386 )

Sep ( N = 2305 )

Oct ( N = 2387 )

Nov ( N = 2258 )

Dec ( N = 2387 )