I have a set of historic order data going back for several years. Simply structured like so:
<tbody>
A
B
C
D
Order number
Customer
Order Date
Delivery Date
12345
Customer A
20/12/2017
06/01/2018
54321
Customer B
01/01/2018
10/01/2018
</tbody>
What I would like is to show is how many...