Is there any evidence that WCSB infestations are increasing?

I am not asking if they are changing behavior, or if they are more noticeable to household members. I am asking if there are studies showing their population is increasing.<br><br>I ask because the entire purpose of this chamber is based on the idea that their population is increasing and their infestations are becoming more aggressive. If they are not actually becoming a bigger problem, then our efforts should be directed at education and awareness (if that is the case, then this chamber is doing it very well).