Date picker: Cannot scroll throug all years

Expected behavior

I want a user to be able to select all years in the year range in the date picker.

Actual behavior

A user can only choose 15 in the range. Say the range goes from 2001 - 1987, the user would first have to click on 1987, and then he would click the list again and could now select down to 1980. How to I modify the code so a user can select from all years and don't have to click multiple times to get to the right year?

Code snippet

var dateObj = new Date();
  var currentDay = dateObj.getUTCDate();
  var currentMonth = dateObj.getUTCMonth();
  var currentYear = dateObj.getUTCFullYear();
  var maxYear = currentYear - 18;
  var minYear = currentYear - 100;

$('#datepicker').pickadate({

  monthsFull: ['Januar', 'Februar', 'Marts', 'April', 'Maj', 'Juni', 'Juli', 'August', 'September', 'Oktober', 'November', 'December'],
  monthsShort: ['Jan', 'Feb', 'Mar', 'Apr', 'Maj', 'Jun', 'Jul', 'Aug', 'Sep', 'Okt', 'Nov', 'Dec'],
  weekdaysFull: ['Søndag', 'Mandag', 'Tirsdag', 'Onsdag', 'Torsdag', 'Fredag', 'Lørdag'],
  weekdaysShort: ['Søn', 'Man', 'Tir', 'Ons', 'Tor', 'Fre', 'Lør'],
  today: undefined,
  clear: 'Slet',
  close: 'Luk',
  labelMonthNext: 'Næste måned',
  labelMonthPrev: 'Forrige måned',
  labelMonthSelect: 'Vælg måned',
  labelYearSelect: 'Vælg år',
  format: 'dd/mm-yyyy',
  formatSubmit: 'yyyy-mm-dd',
  firstDay: 1,
  hiddenName: true,
  min: new Date(minYear, currentMonth, currentDay),
  max: new Date(maxYear, currentMonth, currentDay)

});