That is a number that is sure to go up.
It is growing at a pretty steady rate. Depending upon your mindset there is very little downside to doing so.
Talking to people in a few different countries they all say you lose some of the conveniences we have come to take for granted (like having 60,000 different items in the grocery store, you might have to settle for only 30,000). There are more of course. But most are just simple things that are not really a big deal as I have lived abroad before and understand them
It is not for everyone, I get that. My brother thinks I am crazy, he has like 12 acres of land and would be happy and content to never leave it again I think, he only leaves it when work requires or he needs to do some shopping. He can go weeks without leaving his land. To him it is heaven, it sounds like purgatory to me.
I have an innate wanderlust, I have lived where I am now for 14 years, which is twice as long as I have ever lived in one area and it is driving me bonkers. But we will hold off 5.5 more years as are jobs are too good to walk away from till we retire.
Then I plan to be a vagabond of sorts with no "home base". right now we are planning to move to Panama and we will live in Panama City for the first year or two as we get the lay of the land, then then plan is to move to the mountains there for a few year and then maybe down to the beach. Who knows, then we might find a new country.
We plan to have no pets, few personal belongs and have the freedom to just to go wherever and whenever we feel like it.