A new study shows that more children in the United States are signing up for health insurance. The Robert Wood Johnson Foundation says the percentage of kids who were uninsured nationwide fell from nine-point-seven-percent in 2008 to seven-point-five-percent in 2012. Illinois also showed a decline in the number of uninsured children. In 2008, there were five-point-seven-percent of the kids in the state without insurance. In 2012, those numbers fell to three-point-six-percent.