According to the CBO report, if current coverage were to be maintained, 50 million nonelderly individuals in the US would be uninsured in 2010, rising to 54 million by 2019.
The CBO’s preliminary assessment of major provisions of the Affordable Health Choices Act projects that over that same period about 40 million individuals would obtain coverage through insurance exchanges or “gateways.” Through these exchanges, individuals or families could purchase health insurance, with some enrollees receiving subsidies to lower the costs.
At the same time, however, the CBO estimates that the number of people with coverage through an employer would decline by about 15 million, or about 10 percent. Coverage through federal/state Medicaid, the Children’s Health Insurance Program (CHIP) and other programs would decline by an additional 8 million. This would still leave an estimated 37 Americans without insurance in 2019—about 13 percent of the population.
http://www.wsws.org/articles/2009/jun2009/heal-j17.shtml