Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2022              0.5                             0.0    15.8     0.5     0.2    90.4    51.5    12.4        
    2021      3.8    20.8     0.5     2.5     0.0     0.0   507.7   350.3     5.8     3.5     2.8     5.8   904  
    2020    127.3    10.9    60.7     7.1     0.0     0.0     0.0    15.5     5.1     0.2     3.0     0.8   230  
    2019     91.9    24.1            40.6    34.3     7.9    18.8     0.0    59.2    76.7    46.2    84.1        
    2018    139.5    61.5    13.2    57.9     4.1    18.5     0.0     2.0    25.7    49.3   128.3   112.5   612  
    2017     28.4    70.6    82.6    37.8    22.1    10.9     1.3     1.3    10.9    89.9   131.1   115.6   602  
    2016     58.4   117.8    63.5    11.4     7.9    31.0     5.6     7.1    32.0   121.7    71.4   112.0   640  
    2015     83.5    66.3    72.9    11.2     1.8     3.5    13.2     1.0    34.3   112.0   182.9   144.5   727  
    2014     79.0   115.3   117.3    48.8    22.3     5.8     6.3    16.0    46.0    99.3    97.8    78.2   732  
    2013     58.1    42.2    64.8    58.4    39.9    13.7     0.8    23.9   121.4    19.3    63.2    40.1   546  
    2012     67.6    52.6    50.8     5.8     2.8    24.6    12.4     2.5     1.5   124.7    92.2    95.2   533  
    2011                      0.0     3.5    47.2     5.6    14.2     1.3     7.9    48.5     6.6    41.1        
    2009     82.8    21.3    41.9    35.3    28.7     4.8                                                        
    2008     48.5    35.8    46.5    21.3    11.7    11.9     6.3    27.4     6.3    24.1   101.6    56.4   398  
    2007    185.4    71.4    76.5    25.9     8.6    18.0    17.8    11.4    13.7    47.7    45.9   111.7   634  
    2006    145.0    31.5    25.4    27.2    19.8    16.0     1.3     3.8    25.9    32.7   244.3    98.0   671  
    2005                                             23.4     9.1    26.4    31.5    72.9    79.7    63.7        
 Average     12      39      31      27      63      84      73      86      50      51      26      17     602  
 Std Dev      9     125      86      30      41      65      44      49      35      33      19      15     170