Jan ( N = 266 )
Feb ( N = 435 )
Mar ( N = 480 )
Apr ( N = 462 )
May ( N = 495 )
Jun ( N = 307 )
Jul ( N = 316 )
Aug ( N = 440 )
Sep ( N = 406 )
Oct ( N = 359 )
Nov ( N = 419 )
Dec ( N = 478 )