Nah, no data. Too lazy to dig around. I vividly remember that in my bubble OS/2 was running everywhere. Literally everybody used it, me included. We considered Windows a joke. Some networking software that we used (Fidonet) was literally OS/2 only.
But then I remember how OS/2 was dying a slow death while Windows 95 rose.
So yes, an anecdote it is.
Well, I asked, because I'm also too lazy to dig around for data. So, it's hard for me to complain...
[Edit: All right, I did a very superficial digging, and didn't get an apples-to-apples comparison. But it said that OS/2 sold 2.5 million desktop and 340,000 server versions in 1996. Windows 3.1 sold over 3 million copies within the first three months of its release in 1992. So by 1996, OS/2 may have been more popular than Windows 3.1, because the Windows world had moved on to Win95.]