Create Bins for Count of Occurrance

Hi,

I'm wondering if anybody can help me to crack this challenge I've got,

I have a huge list of bookings (we are a travel company),

Each unique customer has a unique Customer ID.

A customer can of course book more than once (repeat traveller).

I need a way to put into Bins, the Counts of the Customer IDs,

So I need bins which are for example:

Travelled once (Customer ID appears once in period)

Travelled twice (Customer ID appears twice in period)

Travelled 3-5 times

Travelled more than 5 times

In a given year.

I hope that makes sense. I can create a calculated field to count the occurrences of an individual Customer ID - however I cannot create Bins off the calculation to group the data into those who have travelled once, twice etc.

My data looks something like this

Any help would be greatly appreciated.

Thanks,

Jordan