Hi,

I have a monthly sales report and i am trying to determine how many
customers we have at the end of each month for the last few years so i can
attempt to display the growth of our penetration.

The spreadsheet has in column C the name of the client (each client is
allocated its own row), the date (month end) is in column P, the product type
is in column G.

so essentially what i want i want to do is sum the number of rows for each
month for each product.

Any help is greatly appreciated!

Thanks in advance.