Well, compared to northern europeans, americans are a VERY extroverted people, I don't think you realize it yourself though and we swedes are being described as "cold" and "withdrawn" in almost every international poll, lol.
I can only speak for myself but I find conversing really hard and very very very very very draining... I'm a very strong introvert and I often only say a few sentences in an entire day, sometimes I can go days without talking, and it can be acceptable! I guess you can find you average ESFP to date, and it wouldn't be much differnce.
P.S. I get even more withdrawn when I'm drunk.