The ranking, which provides scores for lifestyle challenges in 140 cities worldwide, shows that since 2010 average livability across the world has fallen by 1%, led by a 2.2% fall in the score for stability and safety. While this may seem marginal, it highlights that 57 of the cities surveyed have seen declines in liveability over the last five years. Incidences of terrorist shootings in France and Tunisia have been compounded by civil unrest in the US and ongoing conflicts in Syria, Ukraine and Libya.