5. What is your date of birth and age (in full years)?

Question 5. What is your date of birth and age in full years?
For question 5, you will record the day, month, and year of birth, as well as their age, by asking the person the day, month and year of their birth, as well as their age.
Next, verify that the age stated matches with their stated date of birth by consulting the "Conversion table for birth dates to years on the day of the census" which appears in Annex 1of this manual.
This is one of the most important pieces of information in the census; do not to forget to consult said Annex. For those who are less than 1 year old, write 0/0/0 in the boxes for age.
If the person does not remember their date of birth, you will record their age in full years in the corresponding box, placing dashes in the spaces for day, month and year.
If the person does not even remember their age, you should refer to historical events to help them determine their age, for example:
In general people who do not remember their age tend to give numbers ending in 0 or 5, saying they are 20, 65, 80 years old, etc. In those cases do not put those ages, instead you will ask the person again to better clarify their stated age, thus avoiding the error created by the tendency to state ages ending in those numbers.

Historical events
Second American Occupation - 1906
Start of the economic boom - 1915
Bankruptcy of the banks - 1920
Fall of Machado - 1933
End of World War II - 1945
Triumph of the Cuban Revolution - 1959