Jan ( N = 220 )
Feb ( N = 219 )
Mar ( N = 197 )
Apr ( N = 152 )
May ( N = 207 )
Jun ( N = 132 )
Jul ( N = 121 )
Aug ( N = 250 )
Sep ( N = 201 )
Oct ( N = 185 )
Nov ( N = 231 )
Dec ( N = 256 )