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 | Term start | Term end |
| --- | --- | --- |
| Pier Ruggero Piccio | 1 January 1926 | 6 February 1927 |
| Armando Armani | 10 February 1927 | 13 October 1928 |
| Giuseppe Valle | 22 February 1930 | 23 November 1933 |
| Antonio Bosio | 23 November 1933 | 22 March 1934 |
| Giuseppe Valle | 22 March 1934 | 10 November 1939 |
| Francesco Pricolo | 10 November 1939 | 15 November 1941 |
| Rino Corso Fougier | 15 November 1941 | 27 July 1943 |
| Renato Sandalli | 27 July 1943 | 18 June 1944 |
| Pietro Piacentini | 19 June 1944 | 13 December 1944 |
| Mario Ajmone Cat | 13 December 1944 | 5 February 1951 |
| Aldo Urbani | 5 February 1951 | 10 November 1955 |
| Ferdinando Raffaelli | 10 November 1955 | 1 February 1958 |
| Silvio Napoli | 1 February 1958 | 1 September 1961 |
| Aldo Remondino | 1 September 1961 | 28 February 1968 |
| Duilio S. Fanali | 28 February 1968 | 1 November 1971 |
| Vincenzo Lucertini | 1 November 1971 | 27 February 1974 |
| Dino Ciarlo | 27 February 1974 | 20 June 1977 |
| Alessandro Mettimano | 20 June 1977 | 1 April 1980 |
| Lamberto Bartolucci | 2 April 1980 | 12 October 1983 |
| Basilio Cottone | 19 October 1983 | 17 September 1986 |
| Franco Pisano | 18 September 1986 | 15 April 1990 |
| Stelio Nardini | 16 April 1990 | 24 March 1993 |
| Adelchi Pillinini | 25 March 1993 | 3 June 1995 |
| Mario Arpino | 4 June 1995 | 5 February 1999 |
| Andrea Fornasiero | 5 February 1999 | 5 August 2001 |
| Sandro Ferracuti | 5 August 2001 | 4 August 2004 |
| Leonardo Tricarico | 5 August 2004 | 19 September 2006 |
| Vincenzo Camporini | 19 September 2006 | 30 January 2008 |
| Daniele Tei | 30 January 2008 | 25 February 2010 |
| Giuseppe Bernardis | 25 February 2010 | 25 February 2013 |
| Pasquale Preziosa | 25 February 2013 | Incumbent |
Question:
how many people had terms in the 1970s?
Answer:
4