I think that the number of rounds on-hand is profusely misleading, unless one also accounts for how frequently one shoots. I would hate to see the day in the USA when life becomes as when I lived in Chile, (South America). Non-military personnel were allowed to maintain 1 box (25 rounds) of shotgun shells. Competitive shooters had to register their ammo, and account for each round fired.
That stated, about 2 years back, it was common for me to fire the least 200 rounds of either 9mm or .45 ACP each day. Some days I fired much more. As such, to have 5,000 rounds of 9mm and 5,000 rounds of .45 ACP on-hand...well, it doesn't last long. Add to that, when I would take two Advanced Tactical Shooting classes, each one requiring 700 to 800 rounds in a single night, it really cuts into the stock. Add to that, completing a 3,000 round torture test on two pistols, well, there's 6,000 rounds. See what I mean?
For my part, I have what I need, and then some. Numerically, most of my ammo is .22LR. That makes the number of rounds misleading too. It isn't defensive ammo in a traditional sense, then again, most bad-guys would not want to be caused to develop .22 cal leaks. In terms of centerfire ammo, I try to keep loaded ammo, and handloading materials on hand. Sorry I couldn't give a more straight forward and simple answer.
Edit to clarify, I have carbines chambered in 9mm and .45 ACP. That makes it "rifle/carbine" ammo, but not rifle ammo as in .30-06 Sprg., etc.
Geno