This chart is a tad dated, but still makes the point. Except for aircraft that had not (yet) registered a hull loss, the 737NG family has the lowest hull loss per departure rate of any commercial aircraft covered in this survey. One of the reasons why it may not seem so is that 1) there is likely some confusion with 737 classics and 2) there are numerically more 737's flying than any other type and so the absolute numbers seem higher.