jqyery allways have one checkbox checked

With the following HTML checkbox code

<input type="checkbox" class="example" checked />2016
<input type="checkbox" class="example" />2015
<input type="checkbox" class="example" />2014
<input type="checkbox" class="example" />2013
<input type="checkbox" class="example" />2012
<input type="checkbox" class="example" />2011
<input type="checkbox" class="example" />2010

What changes do I need to make to the following jQuery

 $(function() { 
     $('input[type="checkbox"]').bind('click',function() {
        $('input[type="checkbox"]').not(this).prop("checked", false);
     });
});

so that one of the checkboxes is checked at all times not allowing blank checkboxes?