In that time, I'd guess it's rather pretty stable, also housing prices did grow a lot, despite market getting flooded with new buildings..
And keep in mind, if you rent it out to natural persons, you are only allowed to +25% rent per year, and only after 5yrs fully adjust to neighborhood price. Other entities don't have this restriction.
I was always surprised that my renter increased the rent by their own, without asking, but i didn't care about the currency deprivation and rental income.
Last tip is, Ziraat is the only bank that'll take foreigners without residency, and apparently they will never ask for SoF.