Jan ( N = 2306 )

Feb ( N = 2221 )

Mar ( N = 2387 )

Apr ( N = 2154 )

May ( N = 2381 )

Jun ( N = 2310 )

Jul ( N = 2199 )

Aug ( N = 2382 )

Sep ( N = 2306 )

Oct ( N = 1312 )

Nov ( N = 2001 )

Dec ( N = 2315 )