Jan ( N = 156 )

Feb ( N = 307 )

Mar ( N = 458 )

Apr ( N = 464 )

May ( N = 490 )

Jun ( N = 423 )

Jul ( N = 464 )

Aug ( N = 471 )

Sep ( N = 474 )

Oct ( N = 180 )

Nov ( N = 334 )

Dec ( N = 185 )