I have a sheet that contains rows with customer numbers:
847300001
847300001
847300020
847300015
847300015
847300015
847300002...

What I need to do is a blank row after each groups of numbers:
847300001
847300001

847300020

847300015
847300015
847300015

847300002...

The numbers will change each time I run the report. Any way I can do this?