Jan ( N = 546 )

Feb ( N = 505 )

Mar ( N = 518 )

Apr ( N = 467 )

May ( N = 555 )

Jun ( N = 544 )

Jul ( N = 449 )

Aug ( N = 419 )

Sep ( N = 394 )

Oct ( N = 445 )

Nov ( N = 490 )

Dec ( N = 529 )