California leads the nation with an estimated 3.4 million caregivers whose work has an annual market value of over $36 billion, according to a new analysis compiled by the Family Caregiver Alliance and the National Family Caregivers Association and based on the research of Peter S. Arno, PhD at the Albert Einstein College of Medicine in Bronx, New York. Six other states topped 1,000,000 caregivers in the study (Texas, New York, Florida, Pennsylvania, Illinois, and Ohio) and those same states plus Michigan also had annual market values of over $10 billion.