Yes. To the best of my knowledge, that number is zero. There are some groups in various parts of the world that intentionally keep a distance from outsiders, but few (and very likely no) groups that have no awareness of global culture. The idea of an "uncontacted tribe" is popular in the media, and every few the "last" of them is supposedly found, but that's largely nonsense.

Can I ask what's behind this question? Is there a historical question you'd like answered?