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:
| Title | Date of creation | Surname | First titular |
| --- | --- | --- | --- |
| Duke of Abrantes | December 9, 1753 | Lorena | Ana Maria Catarina Henriqueta de Lorena |
| Duke of Albuquerque | May 19, 1886 | Costa de Sousa de Macedo | João Afonso da Costa de Sousa de Macedo |
| Duke of Aveiro | b. 1535 | Lencastre\nMascarenhas da Silva e Lencastre | John of Lencastre, 1st Marquis of Torres Novas |
| Duke of Ávila and Bolama | May 14, 1878 | Ávila | António José de Ávila |
| Duke of Barcelos | August 5, 1562 | Bragança | John, 6th Duke of Braganza |
| Duke of Beja | 1453 | Portugal-Aviz\nBragança | Ferdinand, Duke of Viseu |
| Duke of Braganza | 1442 | Bragança | Afonso, Count of Barcelos |
| Duke of Cadaval | April 26, 1648 | Álvares Pereira de Melo | Nuno Álvares Pereira de Melo |
| Duke of Caminha | December 14, 1620 | Menezes | Miguel Luís de Menezes |
| Duke of Coimbra | 1415 | Portugal-Aviz\nLencastre\nBragança | Pedro, Prince of Portugal |
| Duke of Faial | April 4, 1833 | Sousa Holstein | Pedro de Sousa Holstein |
| Duke of Ficalho | May 14, 1836 | Almeida | Eugénia Maurícia Tomásia de Almeida Portugal |
| Duke of Goa | 1515 | Albuquerque | Afonso de Albuquerque |
| Duke of Guarda | October 5, 1530 | Portugal-Aviz | Ferdinand, Prince of Portugal |
| Duke of Guimarães | 1475 | Bragança | Fernando II, Duke of Braganza |
| Duke of Lafões | February 17, 1718 | Bragança\nBragança e Ligne de Sousa Tavares Mascarenhas da Silva | Pedro Henrique de Bragança |
| Duke of Linhares | ? | Noronha | Fernando de Noronha |
| Duke of Loulé | October 3, 1852 | Mendonça Rolim de Moura Barreto | Nuno José Severo de Mendonça Rolim de Moura Barreto |
| Duke of Miranda do Corvo | May 13, 1796 | Bragança e Ligne de Sousa Tavares Mascarenhas da Silva | José Sousa Tavares Mascaranhas da Silva |
| Duke of Palmela | October 10, 1850 | Sousa Holstein | Pedro de Sousa Holstein |
| Duke of Porto | 1833 | Bragança | Maria, Princess of Portugal\n(future Queen Maria II) |
| Duke of Saldanha | November 4, 1846 | Saldanha Oliveira e Daun | João Francisco de Saldanha Oliveira e Daun |
| Duke of Tancos | April 22, 1790 | Manoel | Constança Manoel |
| Duke of Terceira | November 8, 1832 | Manoel e Meneses Severim de Noronha | António José de Sousa Manoel e Meneses Severim de Noronha |
| Duke of Torres Novas | September 26, 1619 | Lencastre | George of Lencastre |
| Duke of Trancoso | 1530 | Portugal-Aviz | Ferdinand, Prince of Portugal |
| Duke of Vila Real | February 28, 1585 | Menezes | Manuel de Menezes |
| Duke of Viseu | 1415 | Portugal-Aviz | Henry, the Navigator, Prince of Portugal |
| Duke of Vitória | December 12, 1812 | Wellesley | Arthur Wellesley, Duke of Wellington |
Question:
how many dukedoms are listed?
Answer:
29