Thanks Pat & Richie,
I've tried the running sum in the report previousily and this is what I arrive at;
The totals add up until the end of the year and does not average.
April 14.00 14.00
May 27.61 38.33
June 34.00 72.33
July 39.25 111.58
It doesn't show
1st column Individual month
2nd...