As for now in my opinion it unlikely that everyone around the world are aware of Bitcoin existence already. You know, some people always believe that the level of their awareness are same or should be the same with other people around the world which is not so.
Some people do not become aware of bitcoin existence because they still do not have an awareness of the technology or what happens to the internet. So that makes those people does not know anything about bitcoin. But it makes the young people who always use the internet see the bitcoin promotion from many media. Young people are actively using the internet so that makes them have a big intention to try or search for what they do not know and somehow, some of them are involved in the gambling industry by playing many gambling games.