We have met 100% of the development commitments we made during our IPO and we have added new properties to our portfolio, dramatically reducing development risk. To date, 100% of our portfolio is in operation. On November 10 of last year, Parque Tepeyac opened its doors to visitors, quickly becoming a landmark in the northeastern part of Mexico City. We have seen high levels of footfall and an excellent response from tenants. Development of the Entertainment and Cultural Center is under way, which will enrich the offering of entertainment options and increase visitor flow. This facility is expected to open in the second half of 2023.
To date, we have multiplied the GLA of our Initial Operating Portfolio by 3.5 times and added more than 672,000 square meters of premier quality to our portfolio since October 2013. As of December 31, 2022, the current operating portfolio of Fibra Danhos consisted of 15 properties, with a combined GLA of 939,343 square meters, a total property occupancy rate of 85.4%.
Our retail portfolio recorded an annual footfall of 94.2 million visitors in 2022, a 30.7% increase over 2021. This increase was due primarily to a substantial acceleration of economic activity and the opening of Parque Tepeyac.
The occupancy cost of our most significant institutional retail tenants in terms of GLA and base rents (the costs associated with occupancy of a locale, which include base rent, overage, maintenance fees for common areas and advertising, expressed as a percentage of the sales of those tenants) was 8.7% in 2022. In the same period, the renewal rate (gross leasable area of locales that renewed their lease contracts in a given period, as a percentage of the gross leasable area of the entire portfolio) was 96.5% in 2022, slightly lower than the 97.3% recorded in 2021.
Past-due accounts (rent paid more than 60 days late, as a percentage of base rent income annualized for the respective period) was 2.7% in 2022, down from 4% in 2021. Rent write-offs (accounts more than 180 days past due in proportion to base rent income annualized for the respective period) amounted to 0.64% of the total in 2022, down from 1.25% in 2021.