Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2019                      3.3     0.0    23.1    19.5    20.8    16.5    30.5     0.8     0.2                
    2018    157.2    47.0    48.5    72.6     2.0    20.3     0.5     2.0    41.4     1.3     0.8     7.6   401  
    2017     31.0    92.4   143.7    89.4    37.6    26.9     0.2     2.5    25.1    72.1   134.9   105.9   762  
    2016      1.3     0.0     0.0     0.0    10.2    39.4     5.3    12.7    38.6   104.9     4.3   110.5   327  
    2015    110.2    87.6    64.2     0.0     2.8     5.6    12.7    21.6    48.5    38.1     5.0    11.4   408  
    2014     96.0   103.4            17.3    37.8    31.5     9.4     9.4    24.6    11.4    48.5    10.2        
    2013     38.6     0.8                     0.0    17.5     0.0                     6.1    22.6     4.8        
    2012     31.0    57.9    83.8    49.0    23.4    49.2    20.8     3.8     2.0    15.7     0.5     0.2   337  
    2011     49.0    57.1    31.7    56.6    41.1     0.8    23.9    11.2    38.3    44.2    90.4    50.0   494  
    2010     70.1     4.8    10.1     0.0     0.0     0.0     0.0    10.2    61.0    41.7    55.9    96.8   350  
    2009     39.9    27.9    23.6    23.4    44.7     5.1     7.4             0.2             0.8   108.4        
    2008     84.8    27.1    72.4    34.8    24.9    32.5     0.0            17.8    34.3    99.6    42.4        
    2007                                     25.4    33.5    31.0    30.7    45.5    86.6    86.8   167.1        
 Average     21      22      10      12      31      38      42      60      64      46      48      31     440  
 Std Dev     16      16      11       9      18      34      47      56      45      37      45      32     152