const enumerateDaysBetweenDates = (startDate, endDate) => {
      let daysList = [];
      const start = moment(startDate);
      const end = moment(endDate);
      const day = end.diff(start, "year");
      daysList.push(start.format("YYYY"));
      for (let i = 1; i <= day; i++) {
        daysList.push(start.add(1, "year").format("YYYY"));
      }
      return daysList;
    };
    
 enumerateDaysBetweenDates('2001','2005'); //['2001', '2002', '2003', '2004', '2005']