Do you have any year over year stats on this?
I'm sure Google can give you lots of sources. If its that important feel free to research it. I've spent decades on the industry. It's a damn tough business.
Basically you are looking at a 4-6% profit margin average for a successful place. 50% closure rate in the first year.
But take that 4-6% rate on ones that make it that far. Now that leaves very little error margin for rent hikes, food cost hikes, various labour costs. Add in things like POS costs, subs costs(open table, music). Energy costs. Things like breakage, food waste, and staffing issues can quickly eat that margin to zero. Ive seen it.
How many older restaurants are closing, busy as hell, just due to rent hikes? To developments coming in. My feed gets them pretty regularly.
But its nothing new. This dates back to when I started in the 80's and asked questions of owners. Once I realized what it took I knew I didn't want to open my own.