MEXICO’S murder rate has doubled over the past five years, to nearly 19 per 100,000 people per year. But what does that really mean? To give an idea of how safe or dangerous the country’s various states are, we have compared their crime statistics with those of whole countries. Visitors can relax in Yucatán, the safest state, which has about the same murder rate as Finland. Tlaxcala, not far from Mexico City, is about as safe as the United States. At the other end of the spectrum Chihuahua, the most violent state, has a murder rate equivalent to El Salvador, one of the most violent countries in the world. Another way of looking at the data is to compare the gross totals. The state of San Luis Potosí, for instance, has seen as many murders in the past year as all of Spain, despite having a population of just 2.6m.