From what Noblegiraffe has posted, their numbers look wrong, but a 75% increase on a small number is, well, a small number.
I find the article a bit odd in that they've interviewed a lot of people who seem to want to be teachers, but none who successfully are teaching?
The one thing I will say about teaching is that if you don't need the money, it is a job where it's fairly easy to work part time- if you're older and don't want to work full time, that may be an advantage.
I'd love to see a follow up piece with those people in 1-5 years time.