According to a recent survey,

...36% of American adults who pay all or some of their health insurance premiums said the amount they pay has gone up "a lot" over the past year; while 38% said costs went up "a little," for a total of 74% whose costs went up.

Source: "More Americans Say Health Premiums Went Up Over Past Year," Gallup.com, December 4, 2015, http://www.gallup.com/poll/187523/americans-say-health-premiums-went-past-year.aspx?g_source=CATEGORY_HEALTHCARE&g_medium=topic&g_campaign=tiles