The average cost of health coverage offered by employers pushed toward $19,000 for a family plan this year, as the share of firms providing insurance to workers continued to edge lower, according to a major survey.

Annual premiums rose 3% to $18,764 for an employer plan in 2017, from $18,142 last year, the same rate of increase as in 2016, according to an annual poll of employers performed by the nonprofit Kaiser Family Foundation along with the Health Research & Educational Trust, a nonprofit affiliated with the American Hospital Association.