Jan ( N = 431 )

Feb ( N = 405 )

Mar ( N = 434 )

Apr ( N = 407 )

May ( N = 434 )

Jun ( N = 420 )

Jul ( N = 434 )

Aug ( N = 435 )

Sep ( N = 381 )

Oct ( N = 434 )

Nov ( N = 419 )

Dec ( N = 425 )