You can go to the 10 minute mark and it will be explained.
Interesting. He is pimping books, but amazing stuff. Think his last two years of shemita however should be 2001 and 2008 instead of 2000 and 2007. Of course that could be due to some conversion difficulties between Judism and Christian calendars. 2008 of course would be 7 years from 2015. And the crashes in September and October is true and could be more related to the end of summer. It is a significant time of year. Summer harvests come in and typically many businesses are lost during summer months.