Jan ( N = 2356 )

Feb ( N = 2127 )

Mar ( N = 2352 )

Apr ( N = 2276 )

May ( N = 1961 )

Jun ( N = 2204 )

Jul ( N = 2347 )

Aug ( N = 2349 )

Sep ( N = 2277 )

Oct ( N = 2336 )

Nov ( N = 2274 )

Dec ( N = 2350 )