    Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2016       13       11        7                                                                                          
    2015                                                     0        0        3       11        9       13       18         
    2014                                                                                                                     
    2013                                                                                                                     
    2012                                                                                                                     
    2011                                                                                                                     
    2010                                                                                                                     
    2009                                                                                                                     
    2008                                                                                                                     
    2007                                                                                                                     
    2006                                                                                                                     
    2005                                                                                                                     
    2004                                                                                                                     
    2003                                                                                                                     
    2002                                                                                                                     
 Average       13       11        7   &nbsp;   &nbsp;   &nbsp;   &nbsp;        3       11        9       13       18         

 Std Dev   &nbsp;   &nbsp;   &nbsp;   &nbsp;   &nbsp;   &nbsp;   &nbsp;   &nbsp;   &nbsp;   &nbsp;   &nbsp;   &nbsp;