6.4 million out of 325 million (current number) = 0.019 = 1.9% of the entire US.
https://en.wikipedia.org/wiki/Demography_of_the_United_States
http://money.cnn.com/2016/12/21/news/economy/obamacare-enrollment-record/
Obamacare enrollment is only part of it. It’s impact on rates and insurance choices is getting more and more catastrophic to the nation. It will reach a “critical mass” point where congress will have to act extremely fast with SOMETHING.
The figure I’ve seen are higher. The ~11M on exchanges, 5.5M off exchanges. The off exchange people are the ones that have their heads handed to them on a platter.