More than 5 million Americans who didn't have health insurance before have been able to get coverage since September, according to a new report released Thursday. The report seeks to answer one of the big questions surrounding the government statistics surrounding the law known as Obamacare -- how many people have gained health insurance under the new rules? Early statistics had suggested that many of the people who rushed to buy the plans available on the new health insurance exchanges were just swapping out of other coverage.But the new report suggests the law is having its intended effect of getting people covered who weren't before.