another questionable statistics

Here's an interesting statistic heard on the evening news "Your chance of being bitten by a shark is one in 11,000,000." I guess that's reassuring but I do have some questions.  Is this statistic based on only people who swim in oceans? Since I live in Indiana and never swim in oceans I think my odds are even better. Although, I do remember a time many years ago when my friend's son found a shark in a lake.  It was small and rubber, but still....