Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2015     82.0                                                                                                
    2014            125.5   302.7    85.6    85.6    17.0    64.5    31.5    82.8   293.1   157.7   295.4        
    2013      4.3     8.1    10.9   133.1   105.4    71.6     3.8    77.7   150.1    30.2   117.8                
    2012      4.8    22.1    11.1    23.4    12.2    23.1    11.7     0.8     0.0     2.5     5.1     6.8   124  
    2011                                                                                      0.0     0.8        
    2010    206.0   104.2   107.2   109.5    67.5    23.6     2.3    16.0    50.5    27.4                        
    2009    132.0    86.6    89.1    24.9    70.6    29.0    36.6    12.4    52.6   112.3    93.8   140.0   880  
    2008    214.9    69.1   101.3    21.1    52.8    28.4    14.7    42.1    19.3   101.8   153.1   123.9   943  
    2007     70.8   120.4    88.4    80.3     4.1     3.3     4.8    30.7    45.2   184.9   191.8   223.0  1048  
    2006                                              0.0    14.5     2.5    42.7    52.8   110.5   120.6        
 Average    102      77     102      68      57      24      19      27      55     101     104     130     748  
 Std Dev     86      46      98      46      37      22      21      25      45      97      70     107     422