<input class="easyui-combobox" name="yearChoose" id="yearChoose" data-options="valueField:'id',textField:'text'"/>

$(function(){
    var yearData=[];
    var thisYear= new Date().getUTCFullYear();
    yearData.push({id:thisYear,text:thisYear,selected:true});
    var endYear = thisYear-1;
    for
 
(;endYear>2014;endYear--){
        yearData.push({id:endYear,text:endYear});
    }
    var yearChoose =  $("#yearChoose");
    $("#yearChoose").combobox({
        data:yearData
    });
    loadData(thisYear)
});