Not the prettiest graph, but a neat way of putting all this information into one image.
Wiki Commons page: https://commons.m.wikimedia.org/wiki/File:Generation_timeline.svg#mw-jump-to-license
Wikipedia page on Generations: https://en.wikipedia.org/wiki/Generation
Ah, I was trying to remember what the term for that micro-gen was (I didn’t think it was xennial but it probably makes sense than the one I forgot).