A U. S. foundation says that if healthcare is not reformed, uninsured Americans could pay twice as much for health insurance in 10 years.

A report released Monday by the Robert Wood Johnson Foundation says that premiums will become increasingly expensive for employers and their workers, increasing from $4,800 to $10,300 for single policies and from $12,100 to $25,600 for family policies by 2020.

It was calculated by the foundation that without healthcare reform, the number of uninsured Americans could grow by 10 million people in just five years.

Spending on government healthcare programs for the poor could more than double by 2020, the report also says.

The report said further projects that by 2015, there could be as many as 59.7 million people uninsured and that number could swell to 67.6 million by 2020. An estimated 49.4 million individuals were without health coverage in 2010.

Analysts at the Urban Institute used their Health Insurance Policy Simulation Model to assess the changes in coverage patterns. (With Inputs from Agencies)