Jan ( N = 293 )

Feb ( N = 307 )

Mar ( N = 340 )

Apr ( N = 293 )

May ( N = 328 )

Jun ( N = 327 )

Jul ( N = 309 )

Aug ( N = 335 )

Sep ( N = 329 )

Oct ( N = 339 )

Nov ( N = 326 )

Dec ( N = 338 )