A survey of employers published by the Kaiser Family Foundation in September 2008 found that 8% of covered workers were enrolled in a consumer-driven health plan (including both HSAs and Health Reimbursement Accounts), up from 4% in 2006. The study found that roughly 10% of firms offered such plans to their workers. Large firms were more likely to offer a high-deductible plan (18%), but enrollment was higher in small firms (8% of covered workers, versus 4% in larger firms). As of 2012, these numbers had increased. Approximately 31% of firms offering health insurance offered an HSA (26%) or an HRA (5%) option. Large firms (38%) were somewhat more likely than small (31%) firms to offer such options. 11% of covered workers were in HSAs, while 8% were in HRAs. In small companies, 24% were in high-deductible health plans vs 17% in larger firms.