Last time I was in Odesa, the shelter (which was our underground parking garage) had maybe 20-30 people each night. At the time, russia was firing cruise missiles and drones at the city literally every night.
I suspect the future reconstruction effort is going to involve quite a lot more investment in underground shelters. I don't think Ukraine is going to trust russia for at least the next 100 years. Similar situation to Finland.
In my childhood we had bunkers everywhere. In schools, daily care, around in the neighborhood. I never saw them functioning, but we knew about them. But during growing up them was completely abandoned and destroyed. It took only about 45-50 years after WW2 ended.
Sweden currently has 65000 shelters [1] with space for about 7 million [2] people while the population has risen to more than 10 million people. According to MSB (Myndigheten för samhällsskydd och beredskap or 'civil protection and preparedness authority') no new shelter has been built since 2002 and 'no new shelters are being built at this moment - in their FAQ about the subject the answer to the question 'Can I build a new shelter' is 'No, at the moment no new shelters are being built in Sweden, it is up to the government to decide whether the current threat level mandates the construction of new shelters'. This only goes for public shelters - one of the 65000 mentioned above - and people are free to build their own shelters so it is hard to say how many shelters there actually are.
Swiss new housing isn't mandated to have underground bomb shelters as of late, but people are still planned to a shelter nearby - indeed schools or whatever else.
