Obamacare got off to a lousy start. But things are looking a lot better now.

Nearly a million people signed up for private health plans via healthcare.gov in December, according to statistics the Obama Administration released on Sunday morning. That pushed the total number of sign-ups for the year to 1.1 million. Combined with the totals that states are likely to report by year’s end, it probably means more than 2 million people have signed up for private health insurance though the Affordable Care Act’s marketplaces. That doesn’t count several million who enrolled in Medicaid, the newly expanded federal-state program that provides insurance to low-income people.

The official enrollment number doesn’t tell us many things. It doesn’t tell us whether these people getting private (or public) coverage had insurance previously—or, if they had insurance, how much they were paying for it. It doesn't tell us how many of these people have actually paid premiums, which is essential for coverage to take effect. It doesn’t tell us whether insurers have proper data on these people or what kind of access and protection the new coverage will give. It doesn’t tell us how many of the enrollees are in relatively good health or how many are in relatively poor health—or how that mix will affect insurance prices going forward.

In addition, the numbers do not appear to match the Administration’s own targets. According to internal projections, later reported by the Associated Press, officials expected more than 3.3 million enrollments by year’s end, with about 1.8 million of those coming through the federal website.

For all of those reasons, and a few others, it’s premature to say Obamacare is meeting expectations.