Jan ( N = 2350 )

Feb ( N = 1630 )

Mar ( N = 2362 )

Apr ( N = 2263 )

May ( N = 1461 )

Jun ( N = 2223 )

Jul ( N = 2304 )

Aug ( N = 1558 )

Sep ( N = 1999 )

Oct ( N = 2262 )

Nov ( N = 2167 )

Dec ( N = 2273 )