Measuring monthly changes using pivot

[oerberg]

Hi,

I have a monthly sales report with x amount of customers in a number of countries with an ABCDE mark. I have made a pivot table with ABCDE marks in rows and countries in Columns.
I have then grouped the countries into regions.
Looks something like this:
\1

If you can't see it look here: http://s1115.photobucket.com/albums/...rent=excel.jpg

Now my issue is that I have to compare many months of this kind of data to see movement. What I wanted to do was to display these changes but how do I do this without having to create 10 different pivot tables, and is there a way I can save the country groupings so I don't have to manually group the countries for every pivot table?

[oerberg]

I would just like to at least know if it is possible to save groupings across different data when the labels are the same...