White House spokesman Jay Carney said he doesn't know when the administration plans to release more information about the 7.5 million Americans who signed up for Obamacare on the federal exchanges by the March 31 deadline.

The Department of Health and Human Services and the Centers for Medicare and Medicaid Services “are working to crunch the numbers and assess the data and collect it in a way that provides as much information as possible,” he said Monday during his daily briefing with reporters.

“I don't have a timetable for when that would happen,” he added.

Carney also noted that the timeline for releasing demographic information and details, such as who among the 7.5 million have paid their first month's insurance premium, is different than the timing for the administration's push to have the Senate confirm Sylvia Mathews Burwell as the next HHS secretary.

Obama, when formally announcing his decision to tap Burwell for the post, urged the Senate to confirm her as quickly as possible. Burwell serves as director of the Office of Management and Budget; the Senate confirmed her for that position in a 96-0 vote last year.

“I have no doubt that what we provide – there will be assertions that we haven't provided enough,” he said.