Running total for unique values (load script)

[hald1rka]

Hello, everyone.

I need to add column in load script with running total for each unique value:

Country	Values
Usa	1
Germany	1
France	1
Italy	1
Italy	1
Germany	1

With result:

Country	Values	Running total
Usa	1	1
Germany	1	1
France	1	1
Italy	1	1
Italy	1	2
Germany	1	2

Appreciate your help very much, cause don't know how to do that.

Thanks!