code: def create_timeline(year_counter: typing.Counter[int]) -> List[Tuple[int, int]]:
      
      if not year_counter:
          return []
  
      from_year = min(year_counter) - 1
      until_year = datetime.now().year + 1
  
      return [
          (year, year_counter.get(year, 0))
          for year in range(from_year, until_year)
      ]
docs: Complete the Counter timeline.
  
      :param Counter year_counter: counter dict for each year
      :return: complete timeline