Jan ( N = 280 )

Feb ( N = 282 )

Mar ( N = 348 )

Apr ( N = 334 )

May ( N = 391 )

Jun ( N = 416 )

Jul ( N = 423 )

Aug ( N = 405 )

Sep ( N = 380 )

Oct ( N = 340 )

Nov ( N = 220 )

Dec ( N = 279 )