Let me explain, if I may:
A. In years past, there have been fatal horse falls.
B. This year, there are none.
C. It is possible that 1. there are fewer falls this year; and/or 2. there are just as many falls but those falls are not fatal.
D. It seems that you are arguing that there are “quite a few falls” this year. So perhaps then, you agree with C-2 above, that, in comparison to years past, falls are not as serious this year. In this case, my statement should’ve read: “there are no fatal horse falls this year, which is less than years past.”
Any individual year can have statistical anomalies, so it is best to compare data across multiple years, and not just one year compared to another.