Jan ( N = 2380 )

Feb ( N = 2155 )

Mar ( N = 2386 )

Apr ( N = 2310 )

May ( N = 2382 )

Jun ( N = 2247 )

Jul ( N = 2124 )

Aug ( N = 2360 )

Sep ( N = 2308 )

Oct ( N = 2370 )

Nov ( N = 2295 )

Dec ( N = 2382 )