Jan ( N = 248 )
Feb ( N = 223 )
Mar ( N = 247 )
Apr ( N = 240 )
May ( N = 150 )
Jun ( N = 136 )
Jul ( N = 185 )
Aug ( N = 248 )
Sep ( N = 240 )
Oct ( N = 67 )
Nov ( N = 208 )
Dec ( N = 218 )