Cumulative sum

[Gaucho]

I have the different Rows from 1- 12 and i have unpivot the columns, and obtain the below screenshot;

Now i want to get the Cumulative sum of the *value*, i have consider Attribute as my *Periode Nummer*. 
Could someone help to solve this issue? Thanks in advance.

[Greg_Deckler]

@Gaucho Not a PQ solution, but easy to do in DAX:

Better Running Total - Microsoft Power BI Community

[Gaucho]

Hi @Greg_Deckler , your solution wasn't helpfull to me. Thank you