Jan ( N = 454 )

Feb ( N = 436 )

Mar ( N = 486 )

Apr ( N = 496 )

May ( N = 411 )

Jun ( N = 506 )

Jul ( N = 475 )

Aug ( N = 431 )

Sep ( N = 413 )

Oct ( N = 397 )

Nov ( N = 353 )

Dec ( N = 396 )