There is no way on God's Green Earth that this statement is true.
I don't think the FN in 5.7 Cal has been around since 1994. More like 2000-2004
Table 24 from the report shows that the 425 number is the total for all officers killed by handguns (of all types and all calibres) during the period 1994-2003.
Typical totally bogus report from the DA.
Then, if you look at Table 30 in the report, you see a breakdown by caliber and firearm type (pistol, rifle, shotgun). For 5.7 it shows a total of .... zero. In fact, 9 mm accounts for about 30% of the total deaths.
Jack