Jan ( N = 278 )

Feb ( N = 240 )

Mar ( N = 149 )

Apr ( N = 459 )

May ( N = 459 )

Jun ( N = 507 )

Jul ( N = 479 )

Aug ( N = 429 )

Sep ( N = 415 )

Oct ( N = 357 )

Nov ( N = 356 )

Dec ( N = 377 )