Jan ( N = 535 )

Feb ( N = 487 )

Mar ( N = 538 )

Apr ( N = 507 )

May ( N = 526 )

Jun ( N = 514 )

Jul ( N = 529 )

Aug ( N = 409 )

Sep ( N = 513 )

Oct ( N = 535 )

Nov ( N = 517 )

Dec ( N = 521 )