The document discusses the 6 year anniversary of the Affordable Care Act and provides information on 2016 exchange enrollment, the makeup of the risk pool, and what has been learned. It notes that 12.7 million people signed up for exchange plans in 2016, slightly higher than the 11 million projected. However, the risk pool skewed older and poorer than expected. Many healthy and young individuals did not find the plans attractive without subsidies. The individual mandate also did not work as intended to increase coverage as many found ways to take advantage of ACA rules. Large attrition in enrollment occurred during 2016.