id: 317 yr ( 9, (5, 2, 2, 0)) (( 11.9, 11.4 ), ( 2.6, 6.2 ))
 +27           |                   +28 
            |                    
            |                 2009  
            |                    
  +    +    +    +    +    +    +
            |                    
            |                    
            |                    
            |                    
  +    +    +    +    +    +    +
            |                    
            |                    
            |                    
            |         2017          
  +    +    +    +    +    +    +
            |       2016            
            |    2015               
            |                   
            |   2012                
--+----+----+----+----+----+----+
            |20102014                  
            |                    
            |                    
          2013 |                    
  +    +    +    +    +    +    +
            |                    
            |                    
            |                    
            |                    
  +    +    +    +    +    +    +
            |                    
  2011         |                    
            |                    
 -19           |                   -16