Fewer than any other state.
Check it out:

This Obamacare horror story will no doubt be summarily discarded by Harry Reid, but Hawaii’s taxpayers may take notice anyway. Remember, Hawaii is one of those enlightened, down-for-the-cause states that happily agreed to fully implement Obamacare — the sundry failures of which have been lamely and inaccurately blamed on less cooperative states. The law is “going to be smoother in places…where governors are working to implement it rather than fight it,” President Obama told a cheering audience of partisans in late September.