Throughout the years, there has been an overwhelming [tide/amount] of controversies surrounding X.
I want to say that there has been an increase in controversies surrounding X. But I can't seem to find the right word that would fit in there with overwhelming.
I need a word that would mean a lot of as well as an increase. I thought tide works well as it has two effects to it. Picture this- a tide is progressive, going forward. And it can rise too. Is there a word that fits this?
Also, writing Throughout the years in the beginning, means that some has happened over the years, and so just writing 'a lot of' does not seem to work.