[incepted]

This graph shows that Scala grew from 0.02% market share to 0.08% in the last four years. The fact that it's at 0.08% after more than ten years in existence should be a concern for anyone interested in learning it.

[jinst8gmi]

For comparison Ruby is just over 0.3% and has been flat for four years. It's the overall job market, not just programming jobs so all percentages will be low.

[incepted]

Sure, so this tells us there are about 20 times as many Ruby jobs than Scala ones.

[jinst8gmi]

0.3 / 0.08 = 3.75

That's less that 4x as many Ruby jobs as Scala ones.