Jan ( N = 310 )

Feb ( N = 305 )

Mar ( N = 378 )

Apr ( N = 425 )

May ( N = 465 )

Jun ( N = 428 )

Jul ( N = 464 )

Aug ( N = 441 )

Sep ( N = 399 )

Oct ( N = 362 )

Nov ( N = 307 )

Dec ( N = 277 )