I do this chart each year based on my newsletter subscribers. It shows the version of Crystal Reports that they were using when they sign up for the newsletter. Over time, it shows which versions have staying power and how quickly new versions take hold. I have included numbers for 2016, even though the year is only about half way there. Those numbers will change in next year’s chart when 2016 is complete.
Note that almost 1/4 of users are still using Crystal Reports XI, which is over 10 years old. That is roughly the same as the user base for the next two versions combined. That may be partly because all versions after XI are limited to the .NET runtime engine.