If you do not provide source material then it is deemed as “off the top of your head”. Besides it is not a derogatory sentence. We all use our memory most of the time, which can falter us often. That is why we insist on everyone to provide a source.@Yasar_TR .Also, your comments especially for aviation is one of the reasons that I am reading and participating in this forum. You may just ask the sources, but
this is not a sentence I expected from you.
You mention that you have taken your figures from “Arnold Dashefsky and Ira M. Sheskin”. Funnily enough so has the Jewish Virtual Library. (Just check the bottom of the file)
As you would know Jewishness passes on through the mother. Not father. There may be many around the world that fall in to this category, whereby even though their father is Jewish, they are not classified as Jewish. Also as you rightfully point out many people for one reason or another do not classify themselves as Jewish. There may be a good number of converts too. (I know of a Muslim guy who converted to Judaism. I also know a Jewish guy who is now a devout Catholic.) . You are who you are, if you believe in who you are.
You are right about the financial clout the Jewish communities carry in developed Western nations. There are 312000 Jews in UK (0.4% of UK population). But almost all major supermarkets and most of the media channels have Jewish roots. Most of the top law firms and accountants also have Jewish roots. They are good businessmen. There are 20 Jews in the first 100 super rich list (20%) in UK.
It is quite likely that the same is valid for USA.