for the stake it depends if every holders of dope are staking.
ATM, i'm around 15 - 20%.

Is that per year?
yeah but it won't continue for long if more holders start staking
But the OP says it's ~5% annual

the currency (global money supply) stakes at 5% p. a., so it has to produce so many new coins per day, every day. if only a few faithful are running their wallets, they will surely gather more than a 5% rate