Data released in 2012 indicate that the use of health savings accounts is increasing. AHIP reported in May 2012 that the number of people covered by an HSA-eligible high-deductible health plan more than doubled between January 2008 to January 2012 (going from 6.1 million to 13.5 million). The split between group and individual plans was 11 million as opposed to 2.5 million, and the gender distribution of health savings accounts between male and female enrollees was an even 50%. Among individual plan holders, 51% were under age 40, and 49% were age 40 or over. The top five states with health savings account/high-deductible health plan enrollment were California (1 million), Texas (0.76 million), Illinois (0.72 million), Ohio (0.66 million), and Florida (0.54 million). Also, a survey released in February 2012 by J. P. Morgan Chase of the 900,000 health savings accounts that it manages indicates that contributions to health savings accounts have been steadily increasing. Between 2009 and 2011, the average Chase health savings account balance rose by 11% annually, and the average employee contributions increased by 7% in 2011. Also, in 2011, 42% more dollars were transferred from health savings account cash into health savings account investment accounts than were transferred out. It is believed that the Affordable Care Act, which requires all employers with 50 or more employees to offer health insurance, may be fueling some of this growth. High-deductible health plan premiums tend to be lower, and make an attractive option for both employers and employees. Since health savings account holders are required to be covered by a high-deductible health plan, this creates an opportunity for more growth in the health savings account space.