Jan ( N = 2369 )

Feb ( N = 2155 )

Mar ( N = 2373 )

Apr ( N = 2251 )

May ( N = 2290 )

Jun ( N = 2309 )

Jul ( N = 2324 )

Aug ( N = 2384 )

Sep ( N = 2300 )

Oct ( N = 2387 )

Nov ( N = 2258 )

Dec ( N = 2387 )