Jan ( N = 20 )

Feb ( N = 18 )

Mar ( N = 348 )

Apr ( N = 377 )

May ( N = 308 )

Jun ( N = 37 )

Jul ( N = 374 )

Aug ( N = 360 )

Sep ( N = 379 )

Oct ( N = 341 )

Nov ( N = 254 )

Dec ( N = 179 )