to be honest, I think the difficulty of correctly representing this data comes from trying to plot two conflicting perspectives on the same graph. I think you should have just included either or. Like you could put bands per million in bars, then just country population if you wanted to include demographics too. Or if the absolute number of bands was the important bit, include just that. If you really want to show both, use two separate graphs to allow the reader to see the perspectives separately, the same way they should think about them.

But if you must include both of these data points exactly as is and in a single graph, you should probably use a scatter plot.