Jan ( N = 2339 )

Feb ( N = 1991 )

Mar ( N = 2353 )

Apr ( N = 2250 )

May ( N = 2172 )

Jun ( N = 2254 )

Jul ( N = 2250 )

Aug ( N = 2023 )

Sep ( N = 2238 )

Oct ( N = 2325 )

Nov ( N = 2185 )

Dec ( N = 2340 )