Has the effort peaked to sign up uninsured Americans for coverage? The announcement that the nonprofit organization Enroll America is laying off staff and redirecting its focus in the face of funding cuts comes amid inconsistent sign-ups during the second Affordable Care Act open-enrollment period and concerns about affordability.

A recent New York Times analysis compared Kaiser Family Foundation estimates of potential enrollees with sign-up data from the Department of Health and Human Services. While some states that signed up few people in 2014 recovered during the 2015 open enrollment, other states lagged: “California, the state with the most enrollments in 2014, increased them by only one percentage point this year, despite a big investment in outreach. New York improved by only two percentage points. Washington’s rates are unchanged.”

Most states could not post consistent gains in both open-enrollment periods. An official from Avalere Health, a consulting firm, told the Times that she was “starting to wonder if we’ve overestimated the whole thing.”

The Centers for Disease Control and Prevention (CDC) has released early estimates of health insurance and access to health care for January through September 2014. The National Health Insurance Survey (NHIS) is (in my opinion) the most effective survey of health insurance, because it asks people three different but important questions: Are they uninsured at the time of the survey? Have they been uninsured for at least part of the year? Have they been uninsured for more than a year?

As shown in Figure 2, the proportion of long-term uninsured is about the same as it was circa 2000. The proportion of short-term uninsured has shrink a little in Obamacare’s first year.

New analysis from Avalere finds that while exchanges have succeeded in enrolling very low-income individuals, they continue to struggle to attract middle and higher income enrollees.

Specifically, as of the close of the 2015 open enrollment period, exchanges using HealthCare.gov had enrolled 76 percent of eligible individuals with incomes between 100 and 150 percent of the federal poverty level (FPL) or $11,770 to $17,655. However, participation rates declined dramatically as incomes increase and subsidies decrease. For instance, only 16 percent of those earning 301 to 400 percent FPL picked coverage through an exchange, even though they may be eligible for premium subsidies.

“People receiving more generous subsidies are expected to enroll in the exchanges at higher rates. However, participation levels decline as incomes increase, even among individuals who would be eligible for both premium subsidies and cost-sharing reductions,” said Elizabeth Carpenter, director at Avalere.