TIOBE tracks the "popularity" of programming languages.
To quote from their index page: "The TIOBE Programming Community index is an indicator of the popularity
languages. The index is updated once a month. The ratings are based on
the number of
skilled engineers world-wide, courses and third party vendors. The
popular search engines Google, Bing, Yahoo!, Wikipedia, Amazon, YouTube
and Baidu are used to calculate the ratings. Observe that the TIOBE
index is not about the best programming
language or the language in which most lines of code have been written."
It has been very gratifying to see that PL/SQL is doing much better than holding its own. It has moved up dramatically in the past year. Go, PL/SQL, go!