Neukölln	Δ Rent cost of apartments (yearly)**	Inflation rate (yearly)*
2018	10.09	Base year	Base year
2019	10.06	− 0.30%	1.54%
2020	9.26	− 7.95%	− 0.28%
2021	9.91	7.02%	5.30%
2022	10.43	5.25%	8.57%

* The index employed to calculate inflation is the DECPI2005 index (Bundesamt). The annual inflation rate is calculated on an annual basis (31/12/year “t-1”—31/12/year “t”)

** The source of the data on the median rent of newly rented flats in Berlin (2018–2022) is CBRE Group