Given the task definition, example input & output, solve the new input case.
In this task, you are given a country name, and you need to return the year in which the country became independent. Independence is a nation's independence or statehood, usually after ceasing to be a group or part of another nation or state, or more rarely after the end of military occupation.
Example: Angola
Output: 1975
1975 is the year of independence of Angola.

New input case for you: Gambia
Output:
1965