The document outlines various time periods ranging from 1948 to 2018. It divides the years into periods with different dates, with the most recent period being 2014-2018 which is described as the current mayor's term.

2.  PERIODO
1948 - 1950

3.  PERIODO
1950 – 1951

4.  PERIODO
11951 - 1953

5.  PERIODO
1953 – 1957

6.  PERIODO
1957 – 1958

7.  PERIODO
1958 - 1959

8.  PERIODO
1959 - 1967

9.  PERIODO
1970 – 1976

10.  PERIODO
1976 - 1978

11.  PERIODO
DE ENERO A
SEPTIEMBRE 1978

12.  PERIODO
1978 – 1984

13.  PERIODO
1984 – 1988

14.  PERIODO
1988 – 1992

15.  PERIODO
1992 - 2000

16.  PERIODO
2000 – 2009

17.  PERIODO
2009 - 2014

18.  ALCALDE ACTUAL
 PERIODO
2014 – 2018