Using SUMIFs on a changing Pivot Table - Help!

Hello all

I have a pivot table with revenue as the data, dates as the row fields and
the column fields as countries. I am using a SUMIF formula to add together
the revenue for numerous dates depending on what dates the user specifies.

The problem however is that the column fields in the pivot change if a new
country comes along and then the formula reads the wrong column.

For example, if I want to add up the revenue for the USA which is in column
C my formula would say {=SUMIF(A6:A10,B1,C6:C10)}. However if a new country
comes up e.g. Thailand and pushes the USA into column D then the above
formula would add up the revenue for Thailand not the USA.

Is there a better formula to use to do this?




--
James.