I'm no longer able to perform the updates to the chart. Hopefully, as has happened in the past, someone else can step forward to continue the work.
The main hurdle in doing this is finding a way to quickly splice an image of the chart so it can be easily viewed on the web. I have always used a long outdated version of Paint Shop Pro. The images need to be small enough that they can be stored on a free website (I've used Photobucket) without suffering a resolution drop that makes them unreadable.