Jan ( N = 406 )

Feb ( N = 337 )

Mar ( N = 339 )

Apr ( N = 410 )

May ( N = 433 )

Jun ( N = 420 )

Jul ( N = 432 )

Aug ( N = 416 )

Sep ( N = 420 )

Oct ( N = 432 )

Nov ( N = 420 )

Dec ( N = 418 )