Well, this isn’t exactly what I expected to find. I took a look at the average number of starts per horse in each crop. I was expecting to see a gradual steady decline over the past 15 years. However, it appears that there hasn’t been much decrease since the 2002 crop.
For the 2011 crop, keep in mind that this data was gathered mid-way through their five year old season, so they will likely end up with a similar number of starts to previous crops.
These results definitely make the very high average number of starts that I found for some of the ‘old time’ sires’ offspring even more impressive, since it appears that the game hasn’t changed quite as much as I’d imagined.