Jan ( N = 22 )

Feb ( N = 100 )

Mar ( N = 434 )

Apr ( N = 403 )

May ( N = 391 )

Jun ( N = 366 )

Jul ( N = 357 )

Aug ( N = 339 )

Sep ( N = 307 )

Oct ( N = 309 )

Nov ( N = 270 )

Dec ( N = 267 )