The federal debt is now 74 percent of the nation's gross domestic product. This percentage is twice what it was in 2007 and higher than in any year since 1950. Health care costs include Medicare, Medicaid, the Children's Health Insurance Program and tax credits to enrollees and subsidies to insurance exchanges under the Affordable Care Act. These programs will grow by 85 percent by 2024. Social Security is projected to increase by almost 80 percent by then. And interest payments on the nation's debt will jump from the current $200 billion annual rate to $800 billion by 2024.