Below are links to various charts that we have put together. There are three separate links. The first link is a listing of various charts based on total data (1989 to 2021). The second link is to charts based on just the latest year of the survey. At this time, that would be 2021 data. The third link is to charts based only on 2021 unexplained cases.
Please be aware that these three links are all vary image intensive, given that each page has between ten and thirty images.
