I think looking at the used market might not be a good way to measure, because 20+ are worth essentially nothing, so they don't get sold a lot :) but that doesn

I think looking at the used market might not be a good way to measure, because 20+ are worth essentially nothing, so they don't get sold a lot :) but that doesn't mean they don't continue working. Think that many people cannot afford changing car, even more so when the current car is worth nothing on the market.