But criminal damage is down. Of course, if you call the police for criminal damage, everyone knows they won't turn up and you'll just get a crime number, so unless you're claiming on insurance you're probably less and less likely to report it.
We shouldn't be aiming for London (with 200 phones stolen every day as it is) to reach the level of the worst European or American cities.
Assuming there are 9 million people in London, that means that 1/45,000 Londoners experience a phone theft on a given day.
We can then (very crudely) estimate the probability that a Londoner has their phone stolen over a ten year period:
1 - ((1-45000)/45000)^(365*10) = 0.08
I'm obviously not suggesting that the calculation above be taken too seriously. But it shows that 200 phones being stolen a day in a city of 9 million people is consistent with phone theft being a significant but not overwhelming problem.
(The adult population of London is around 7 million, and kids are obviously also victims of phone theft, so you won't get a radically different answer if you look at the population over a certain age.)
I think you mean:
1 - ((45000-1)/45000)^(365*10) = 0.08