I do not know about in Israel but it was first the UK knew a lot about AS and "HF" autism, then in the late '90s the AS diagnosis really became widespread in the US. And then it was after that, that it started spreading to other countries for example continental Europe, Asia, Africa and Latin America.
Since Israel is probably culturally related to continental Europe and Southwest Asia more than to the Anglosphere (Just my conjecture. I know very little about Israeli culture), I would say it would have to be in the late, late '90s or early 00s.