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:
| State | Title | Name | Entered office |
| --- | --- | --- | --- |
| Barbados | President of the Senate | Sir Stanley Robinson | 1966 |
| Barbados | Speaker of the House of Assembly | Sir Theodore Brancker | 1961 |
| Bolivia | President of the Senate | ? | 1970 |
| Bolivia | President of the Chamber of Deputies | ? | 1970 |
| Brazil | President of the Senate | João Cleofas de Oliveira | 1970 |
| Brazil | President of the Chamber of Deputies | Geraldo Freire da Silva | 1970 |
| Canada | Speaker of the Senate | Hon. Jean-Paul Deschatelets | September 5, 1968 |
| Canada | Speaker of the House of Commons | Hon. Lucien Lamoureux | January 18, 1966 |
| Chile | President of the Senate | Tomás Pablo Elorza | 1969 |
| Chile | President of the Chamber of Deputies | Fernando Humberto Andrés Sanhueza Herbarge | July 20, 1970 |
| Colombia | President of the Senate | Eduardo Abuchaibe Ramírez | 1970 |
| Colombia | President of the Chamber of Representatives | ? | ? |
| Costa Rica | President of the Congress | Daniel Oduber Quirós | 1970 |
| Dominican Republic | President of Assembly | Pedro Váldez ? | 1966 ? |
| Ecuador | President of the Senate | ? | ? |
| Ecuador | President of the Chamber of Deputies | ? | ? |
| El Salvador | President of the Legislative Assembly | Dr. Benjamin Iteriano ? | 1970 ? |
| Guatemala | President of the Congress | Mario Sandoval Alarcón | 1970 |
| Guyana | Speaker of the Legislative Assembly | Hon. Rahman Bacchus Gajraj | 1968 |
| Haiti | President of the National Assembly | Ulrick St. Louis ? | ? |
| Honduras | President of the National Congress | Lic. Mario Rivera López | 1965 |
| Jamaica | President of the Senate | G. S. Ranglin | December 7, 1962 |
| Jamaica | Speaker of the House of Representatives | Eugene Parkinson | 1967 |
| Mexico | President of the Senate | Lic. Manuel Aguirre[disambiguation needed] ? | 1967 ? |
| Mexico | President of the Federal Chamber of Deputies | Lic. Luis Farias ? | 1967 ? |
| Nicaragua | President of the Senate | Dr. Adrían Cuadra Gutiérrez ? |  |
| Nicaragua | President of the Chamber of Deputies | Dr. Orlando Montenegro ? |  |
| Paraguay | President of the Council of State | Dr. Juan Ramón Chavez ? | 1967 ? |
| Trinidad and Tobago | President of the Senate | J. Hamilton Maurice | December 29, 1961 |
| Trinidad and Tobago | Speaker of the House of Representatives | A. C. Thomasos | December 29, 1961 |
| USA | President of the Senate (The Vice President of the United States of America) | Spiro Agnew | January 20, 1969 |
| USA | President pro tempore of the Senate | Richard B. Russell | January 2, 1969 |
| USA | Speaker of the House of Representatives | John William McCormack | January 10, 1962 |
| Puerto Rico | President of the Senate | Rafael Hernández Colón | 1969 |
| Puerto Rico | Speaker of the House of Representatives | Angel Viera Martínez | January 13, 1969 |
| Uruguay | President of the Senate (The Vice President of Uruguay) | Dr. Alberto Abdala | December 6, 1967 |
| Uruguay | President of the Chamber of Deputies | Fernando Elichirigoity | March 1, 1970 |
| Venezuela | President of the Senate | Dr. José A. Pérez Díaz ? | 1968 ? |
| Venezuela | President of the Chamber of Deputies | Prof. Jorge Dargen ? | 1968 ? |
Question:
what is the total number of states listed on the chart?
Answer:
22