The most relevant number is the unemployment rate, which we don't get explicitly.

I get that you can work it out and it doesn't change much, but it should be immediately clear at first glance.

1)obviously reflective of the number who speak the language, not total national population as the numbers add up to 100% (or near it)

2)this statistic usually means anyone not working or looking for work. Sometimes includes students, usually includes housewives, retired, and those too disabled to work.