Jan ( N = 435 )

Feb ( N = 421 )

Mar ( N = 326 )

Apr ( N = 424 )

May ( N = 428 )

Jun ( N = 399 )

Jul ( N = 423 )

Aug ( N = 396 )

Sep ( N = 353 )

Oct ( N = 513 )

Nov ( N = 488 )

Dec ( N = 421 )