multi level drill down in pivot charts using excel 2013

Hello guys,

I am trying to achieve multi level drill down on data using pivot chart and pivot table

here is the data that i have:

I want to show on pivot chart only the continents and the sum of population for the continents. When I double click on sum of population for a particular continent(ex: Africa) to drill down, I want to show, only the countries within Africa and their population. When i drill down furthur I want to show cities and their population.

What is happening now is that, when I double click on sum of population for continent, i get all population broken down by cities.

my single level drill down result:

Appreciate any help......

Thanks in advance.