When users type URLs into the browser (i.e. in order to visit a web page), of the 6 possible permutations, what is the percent of the time that each permutation is entered?
example.com
http://example.com
https://example.com
www.example.com
http://www.example.com
https://www.example.com
The reason for wanting to know this is because it can be (surprisingly) challenging to get all 6 permutations working (depending on things like the domain name registrar and hosting provider used) so sometimes a site will not be set up in a way such that all 6 permutations work. Having knowledge of the percent of the time each permutation is typed would help quantify the extent of inconvenience to users when one or more of the 6 permutations don't work.
A random example would be in the case a site had 5 permutations working, but not https://example.com; such statistics would allow for estimates of the approximate percent of users who attempt to type in a URL who will be inconvenienced.