Blessed little. I started out very slow and I only had 8 hubs or so. Probably had about 400 visits. I have started taking HubPages more seriously in the last year and have seen some positive developments in traffic. I am now getting about 40 or so visitors per day and I have about 33 hubs total.
I suspect with the questions and answers section becoming more of interest, I will probably be able to double the number of visits per day by the end of this year or early next year. I have written 3 hubs so far in response to questions.
It just takes a while to get the ball rolling for some. I see others who have 100's of followers and who have been on the site for less than 1/2 a year. I really don't know how they do this unless they come on board with tons of followers from other social networking sites like Facebook.