GDP is already in there. The ‘relative’ is only there so that people dont think its on the same axis as everything else. Global economy is just a zero-to-one value like GDP is…
In fact as I type this out, I can see that this chart is maybe pretty confusing to new players…
Its difficult to show so much information on one chart, when ideally they are all overlaid over each other to show the relationships…and yet the Y axis is different for nearly all of them 