Jan ( N = 293 )

Feb ( N = 309 )

Mar ( N = 372 )

Apr ( N = 389 )

May ( N = 426 )

Jun ( N = 480 )

Jul ( N = 496 )

Aug ( N = 453 )

Sep ( N = 326 )

Oct ( N = 337 )

Nov ( N = 247 )

Dec ( N = 233 )