Ahead of its participation in the U.S. Conference of Mayors' Summer Meeting in Florida, Airbnb emphasized once more its big sell to local governments in a new report: positive economic impact for the middle class.

According to Airbnb, 60% of U.S. hosts say it has helped them afford to stay in their homes, 51% say they rely on Airbnb income to make ends meet, and 44% of U.S. hosts earn $75,000 a year or less.

Between the lines: Airbnb faces a lot of criticism for contributing to housing crises in cities like San Francisco, and for increasing housing prices, so the home-sharing company is constantly touting such data as a counterpoint, especially to local legislators.

More from this year's report (2016 data):

• Airbnb supported 730,000 jobs worldwide, including 130,000 in the U.S.
• $61 billion in estimated economic output from Airbnb worldwide, including $14 billion in U.S. cities.
• Airbnb has tax agreements with 310 jurisdictions globally, including more than 250 in the U.S. $300 million in hotel and tourist taxes remitted, including more than $270 million in the U.S.
• 57% of U.S. hosts are in cities with tax agreements.