def create_timeline(year_counter: typing.Counter[int]) -> List[Tuple[int, int]]:
if not year_counter:<EOL><INDENT>return []<EOL><DEDENT>from_year = min(year_counter) - <NUM_LIT:1><EOL>until_year = datetime.now().year + <NUM_LIT:1><EOL>return [<EOL>(year, year_counter.get(year, <NUM_LIT:0>))<EOL>for year in range(from_year, until_year)<EOL>]<EOL>
Complete the Counter timeline.

    :param Counter year_counter: counter dict for each year
    :return: complete timeline