Jan ( N = 149 )

Feb ( N = 249 )

Mar ( N = 267 )

Apr ( N = 340 )

May ( N = 390 )

Jun ( N = 415 )

Jul ( N = 423 )

Aug ( N = 410 )

Sep ( N = 377 )

Oct ( N = 344 )

Nov ( N = 227 )

Dec ( N = 287 )