id: 321 yr ( 11, (2, 0, 8, 1)) (( 13.1, 12.4 ), ( 9.1, 11.2 ))
 +6                           |   +3 
   +    +    +    +    +    +    
                            | 2016 10  
                            |    
                            |    
                           2017|    
---+----+----+----+----+--2011-+----
                            |    
                        2012   |    
                            |    
                            |    
   +    +    +    +  2014 13 +    +    
                            |    
                           |    
                   2015        |    
                            |    
   +    +    +    +    +    +    
                            |    
                            |    
                            |    
                            |    
   +    +   2018+    +    +    +    
                            |    
                            |    
                            |    
                            |    
   +    +    +    +    +    +    
                            |    
                            |    
                            |    
                            |    
  2020 19+    +    +    +    +    +    
                            |    
 -33                           |   -34