So add that to the ~8 million last year.
Just one (1) box of ammo equals (11,000,000 X 50) 550 million ‘extra’ rounds of ammo in the last 18 months, and it’s a sure bet that no one buys just one, or even two boxes of ammo when they buy a gun for the first time, and add into that the odds these new shooters may be buying cases – 500/1000 rounds.
And that is just for the new gun owners.