Got a quick note from the World Census. They're pleased with how the rankings are tracking, although we should expect some minor adjustments as they refine their algorithms over the next few weeks, apparently.
There's also a new ranking, Residency, which tracks how long nations have been in their current region. A lot of the older data for this was scraped together by interns with flashlights from the World Census basement, so it's basically the best they could do before the razor-toothed basement rats were drawn to the smell of human flesh.
Also: 150,000 active nations! This is the most in world history.