id: 53 yr ( 5, (2, 3, 0, 0)) (( 3.7, 3.1 ), ( 0.8, 13.3 ))
 +8                              +19 
|                               
|                            2016  
+    +    +    +    +    +    + 
|                               
|                               
|                               
|                               
+    +    +    +    +    +    + 
|                               
|                    2018          
|                               
|                              
+----+----+----+--2017-+----+----+-
|                               
|                 2019             
|                               
|                               
+    +    +    +    +    +    + 
|              2020                
|                               
 -4