Ever wondered where in the world it's best to be old? Where your psychological well-being and life expectancy would be maximised? Where you'd be at the lowest risk of poverty? Have the best access to public transport? HelpAge International has launched a new index that looks at quality of life for 89% of the world's older people in 91 countries. Click on the map below to find out why Sweden was the best place to live as an old person, and Afghanistan was the worst.