Another earthquake rocks Afghanistan. What makes the country so vulnerable to temblors?

Afghanistan has been rattled once again by an earthquake — this time, a 6.3-magnitude temblor has caused 20 deaths so far and another 150 injuries. Studies show that an average of 560 people die and damages estimated at $80 million are caused by quakes in the South Asian country each year. But why is it that the nation sees so many tremors?