I'd like to create a grouped, stacked column chart. There should be two columns (2000, 2050) for each region (OECD, BRICS, ...), and each of the columns has the same multiple categories. Here is what I came up with so far.
The thing is that I have no idea how to display the "2000" and "2050"; as well as how to avoid that the categories are being displayed two times in the legend.
Thanks for any hints!