Crosstab running totals with specs for actual year

I created a crosstab with revenues per location per year.
The table I used has revenues per month
For the actual year I want running total per month after the last year column.

I can’t figure out how to show the running total for only lasts year months

Example :

             2008 2009 2010 2011 2012 2012-01 2012-02 2012-03 ...............


Try these:

WHy dont you just add extra field in your framework?

Like Year and Month and add them to your framework.

Then you build your report something like

[Year] and for the last year u add [Month] as well.

U prolly can solve this with running-total and aggregate total as well but do it the easy way.