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:
| Represents | Contestant | Age | Height (cm) | Height (ft) | Hometown |
| --- | --- | --- | --- | --- | --- |
| Azua | Aneliz Henríquez Soto | 24.0 | 1.71 | 5'7" | Santo Domingo |
| Bonao | Lorraine Súarez Carmona | 21.0 | 1.75 | 5'9" | Bonao |
| Comunidad Dominicana En EEUU | Ashley Pérez Cabrera | 19.0 | 1.70 | 5'6" | Miami |
| Distrito Nacional | Elizabeth Quiñónez Aroyo | 20.0 | 1.71 | 5'7" | Santo Domingo |
| Haina | Eve Tatiana Cruz Oviedo | 19.0 | 1.72 | 5'7" | Santo Domingo |
| Imbert | Nadia Caba Rodríguez | 22.0 | 1.79 | 5'10" | Santo Domingo |
| Jarabacoa | Clary Sermina Delgado Cid | 21.0 | 1.75 | 5'9" | Santiago de los Caballeros |
| La Altagracia | Marina Castro Medina | 20.0 | 1.76 | 5'9" | Santo Domingo |
| La Romana | Rosa Clarissa Ortíz Melo | 23.0 | 1.81 | 5'11" | La Romana |
| La Vega | Endis de los Santos Álvarez | 24.0 | 1.72 | 5'7" | Los Alcarrizos |
| Monte Plata | Emeniris Tatís Guerra | 25.0 | 1.72 | 5'7" | Santo Domingo |
| Neiba | Walesca Torres Xavier | 21.0 | 1.73 | 5'8" | Santo Domingo |
| Puerto Plata | Joneydis Peña Vargas | 22.0 | 1.83 | 6'0" | Puerto Plata |
| Salcedo | Amanda Ureña Zaragoza | 26.0 | 1.70 | 5'6" | Salcedo |
| San Cristóbal | Carmen Rosa Torres Lebrón | 18.0 | 1.72 | 5'7" | San Cristóbal |
| San Francisco de Macorís | Mariel García Estevez | 20.0 | 1.78 | 5'10" | Santo Domingo |
| San Juan de la Maguana | Carolina Polanco Ojeda | 24.0 | 1.75 | 5'9" | Santo Domingo |
| Santiago | Anna Hernández Taveras | 18.0 | 1.73 | 5'8" | Santiago de los Caballeros |
| Santo Domingo Norte | Edilia Veras Inoa | 19.0 | 1.69 | 5'6" | Santiago de los Caballeros |
Question:
Name the least age for distrito nacional
Answer:
20.0