Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Name | Rank | Age | Years until mandatory retirement | Appointed by | Year appointed |
| --- | --- | --- | --- | --- | --- |
| Anabelle Rodríguez | Associate Justice | 64 | 6 years | Sila María Calderón | 2004 |
| Edgardo Rivera Garcia | Associate Justice | 59 | 11 years | Luis Fortuño | 2010 |
| Erick Kolthoff Caraballo | Associate Justice | 53 | 17 years | Luis Fortuño | 2009 |
| Federico Hernández Denton | Chief Justice | 70 | 0 year | Sila María Calderón | 2004 |
| Liana Fiol Matta | Associate Justice | 68 | 2 years | Sila María Calderón | 2004 |
| Luis Estrella Martínez | Associate Justice | 43 | 27 years | Luis Fortuño | 2011 |
| Mildred Pabón Charneco | Associate Justice | 57 | 13 years | Luis Fortuño | 2009 |
| Rafael Martínez Torres | Associate Justice | 55 | 15 years | Luis Fortuño | 2009 |
| Roberto Feliberti Cintrón | Associate Justice | 51 | 19 years | Luis Fortuño | 2011 |
Question:
who has the least number of years until their mandatory retirement?
Answer:
Federico Hernández Denton