Only Date Picker, Bootstrap

<link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.2.0/css/datepicker.min.css" rel="stylesheet">

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>

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<input type="text" class="form-control" name="datepicker" id="datepicker" />

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<script>
$(document).ready(function(){
  $("#datepicker").datepicker({
     format: "yyyy",
     viewMode: "years", 
     minViewMode: "years",
     autoclose:true
  });   
})

</script>

<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.2.0/js/bootstrap-datepicker.min.js"></script>