Miami-Dade County in Florida has had a pit bull ban for 20 years. What are the results?

Apparently Miami-Dade County in Florida has had a pitbull ban in effect for the last 20 years. Despite numerous attempts to overturn the ban it has been reaffirmed several times by the voters in the county over that period of time.

What are the results of that ban with respect to dog attacks that resulted in fatal or near fatal injuries? Have these been reduced relative to what they were before?

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