the chart is clear, I don't see any need to count this by detail, it's obvious by taking a glance. the US dollar will get weaker and weaker but the US is the strongest country in the world in any aspect so I think it will take at least 17 years for the dollar to become that weak. and by that time maybe they'll figure out a way to stay a hegemon. ( like using a new currency that again the whole world accepts).