Given that I've been reviewing close votes for a while, I can hardly reject the strong tendency to the growing number of questions with pending close votes. As per today, the number of outstanding questions is 79 500, when some time ago it was 50 000. My personal experience suggests that there is quite a big group of questions asked either new users or users with low reputation that are typically closed because of being unclearn or because of lack of minimal understanding / code in question.
Is there some statistical data that shows the structure of the questions that are in the close queue? If yes, we may statistically test the assumption of correlation between user's reputation / presence within the system and the number of close votes cast on their questions, and in case we find positive correlation we may increase the minimal reputation / membership period that's needed to raise a new question to counter the evergrowing number of questions that are to be closed.
What do you think? How can we influence the number of questions that are waiting to be closed? Or do you think that we shall bear with the situation of decrease in average question quality?