There are some info/studies about it linked here that show it's fairly high: https://perma.cc/#landing-problem https://perma.cc/#landing-problem Perma.cc was c

There are some info/studies about it linked here that show it's fairly high: https://perma.cc/#landing-problem https://perma.cc/#landing-problem Perma.cc was created by the Harvard Law School Library specifically to try to solve that issue, since so many citation links were becoming useless.