And even that 26% doesn't answer the real question.
How many of the previously uninsured would have gotten ensured anyways?
Clearly all the previously uninsured would not have remained uninsured until the end of time if not for Obamacare.
As you can see, the best thing Obama could have done for the uninsured was improve the economy. If he would have gotten out of the way and not cranked up regulations and spending and allowed the economy to recover quickly, we would been back to around a 14 to 15% years ago. Of course, with the creeping "recovery" it will take much longer, and you know who will claim credit once we get back their in spite of and because of his policies.
Just like the unemployed (except when the government pays them to stay unemployed), and just like the income earners in any particular bin (except when the government kills economic opportunity), they are not the same people year after year or even month after month.
Get older and you are more likely to get insured. Same with getting a job.
A politician thinks of the next election; a statesman of the next generation. A politician looks for the success of his party; a statesman for that of the country. The statesman wished to steer, while the politician was satisfied to drift.