Although we won't know for at least a few weeks how many people signed up for insurance under the Affordable Care Act, one thing is clear: There clearly has been an uptick in enrollment in recent days. Here's a look at how interest in coverage has accelerated and what advocates are doing to get people covered -- or at least in the system -- by midnight Monday, the deadline to sign up for a health-care plan without risking a penalty.

8.7 million. That's how many visits has had in the past week, with 2 million this past weekend.

65,000. That's how many text messages the Centers for Medicare and Medicaid Services has sent over the past week to people who have started the enrollment process but not completed it, reminding them what they need to do to finish by the March 31 deadline.

More than 100. That's how many celebrities and athletes -- including LeBron James and Julia Louis-Dreyfus -- tweeted on behalf of the law.

646,000. That's the record for how many calls the 1-800-Medicare call center received in one day, on May 15, 2006 (the last day of the initial open enrollment period for Medicare Part D). The federal health insurance marketplace call center is likely to break that record Monday; the most calls it has received over the past six months was 564,000  on Dec. 23.

At least 300. That's how many radio interviews administration officials -- including President Obama, as well as senior aides such as Valerie Jarrett, Denis McDonough and Dan Pfeiffer -- have given over the past six weeks.

2.5 million. That's how many calls the federal call center received over the past week, compared with the 2.4 million it received during the month of February.

99,935, 30,253 and 20,569. That's how many robo-calls the Service Employees International Union Local 521, whose members work for county and city governments in the Bay Area of California, made in Spanish, Chinese and Vietnamese, respectively. The local also made 77,057 phone bank calls to urge area residents to sign up under the law.

Now, the question is how all these numbers will add up when it comes to how many Americans have health insurance.