Jan ( N = 320 )

Feb ( N = 361 )

Mar ( N = 400 )

Apr ( N = 334 )

May ( N = 382 )

Jun ( N = 337 )

Jul ( N = 400 )

Aug ( N = 374 )

Sep ( N = 371 )

Oct ( N = 386 )

Nov ( N = 387 )

Dec ( N = 322 )