Qlikview: Aggregation 1: How to calculate percentages at second dimension level

Sometimes, it may be necessary to display percentages for each item of dimension 1 in a way to add up to 100%, as in the following screenshot:

The solution is to use aggregation in the expression which calculates percentages:
expr 1: Total Sales: sum(SalesAmount)
expr 2: Percentage:  sum(SalesAmount)/aggr(NODISTINCT sum(SalesAmount),Country)

The applied solution can be viewed in the qlikview application which can be downloaded from the following link:
https://sites.google.com/site/quickdevtips/home/SecondDimPercentage.qvw