Is this rate shock unforeseen? Not really. Rocketing Obamacare rate requests have become an annual rite of summer, as welcome as sunstroke. In California, for instance, Obamacare health coverage is slated to rise by an average of 13.2 percent next year — more than three times the increase in each of the past two years. In Michigan, the pass-the-smelling-salts proposal is 17.3 percent.