"With Over 180 Years of Experience"

A portfolio management company website I came across referred to their team of experts "with over 180 years of experience". Googling shows that over 2,000 sites use that exact phrase.

I wonder what it means: 18 people with 10 years of experience each? 180 people with 1 year each? Aren't some of those years the same years, in the sense that people often start out making the same mistakes as each other? 

Reminds me of the quote attributed to Niels Bohr:

An expert is a man who has made all the mistakes which can be made, in a narrow field.

If it is true that each field has a finite number of mistakes, then at some point experts run out of new mistakes to make and will plateau. (Maybe that is when you start to broaden the field of expertise.) But a team is going to plateau faster than an individual, unless in a state of perfect communication and an institutional memory on par with one person's memory.