Question about first year sires

[my miss storm cat]

I'll preface this by saying I know nothing about this kind of thing...

The good people at Poonawalla Stud in India were kind enough to update me on (music, please ) Ace () .

He's doing well. Happy, healthy, adored.

Anyway he has 67 foals in his first crop and they're due to begin racing later this year.

So this number... is this good? Bad? Average?

Thanks in advance!