http://www.mirror.co.uk/news/ampp3d/...-graph-5009115
I found this quite interesting. It's an article regarding whether controversy boosts the ratings. The figures shown in the graph are the series averages of CBB throughout the 15 seasons.
There is also a poll asking whether people are enjoying it this year, and the result so far is:
Yes- 70%
No- 30%
There are also other poll questions which are a little out there but interesting!
Must note they mucked up the graph by saying "Carol says N word" with an arrow pointing to CBB11, when in reality it was CBB12.