Jan ( N = 310 )

Feb ( N = 306 )

Mar ( N = 379 )

Apr ( N = 423 )

May ( N = 465 )

Jun ( N = 433 )

Jul ( N = 464 )

Aug ( N = 441 )

Sep ( N = 400 )

Oct ( N = 363 )

Nov ( N = 307 )

Dec ( N = 277 )