59 to 60 is actually 50 points . In order to break through in the tenth place it takes the corresponding tenth place's value. For example 40-50 is 40 points and 50-60 requires 50 points.
Stamina changed from 59 to 61, consuming 56 attribute points; strength changed from 55 to 59, consuming 20 attribute points;and the rest of the attributes remained unchanged.