According to a recent analysis:

• Average health insurance premiums nationwide did not change from 2014 to 2015, although there were wide differences across states
• The average deductible for a marketplace health plan increased by just 1% from 2014 to 2015
• From 2008 to 2010, premiums grew an average 10% or more per year in state individual insurance markets

Source: "Analysis Finds No Nationwide Increase in Health Insurance Marketplace Premiums," The Commonwealth Fund Blog, December 22, 2014, http://www.commonwealthfund.org/publications/blog/2014/dec/zero-inflation-nationwide-for-marketplace-premiums