Scanning the raw data, I see the Toyota Sienna has zero reported deaths in any category (Minivans seem to do well in all categories).

Like others mention, this likely has to do with some degree of selection bias (i.e., Drivers who are safer choose certain vehicle types like minivans) as well as (in the case of the Sienna) a very small sample size, likely due to the model redesign that fell within the period, limiting the data - survey only chose most recent model data during the period).

What's also frustrating is they don't mention all deaths/injuries. For some insight into that, it's probably best to look at the IIHS other reports on insurance losses per model: http://www.iihs.org/research/hldi/composite_intro.html