Early Analysis In Eleven States Finds Modest Increases For ACA Silver Plans June 24, 2015 News Release A Kaiser Family Foundation analysis of Affordable Care Act (ACA) plans in major metropolitan areas in 11 states where data are available, including the District of Columbia, finds that preliminary 2016 premiums for benchmark silver plans grew modestly, but increased more sharply this year than last year. The average increase for benchmark plans across the cities is 4.4 percent for 2016 compared with a 2 percent increase nationwide in 2015.