For the 22 years 1999-2020 (8,030 days) firearm homicides among children ages 1-17 totaled 19,306 or 2.404/day.
For the 18 years 1981-1998 (6,570 days) firearm homicides among children ages 1-17 totaled 21,919 or 3.336/day.
The per day rate has declined 28%.
Data here.
