Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2021    110.7    86.1    40.4    20.1    17.8    13.5     0.0     4.6    88.9     2.3                        
    2020    195.3    89.9    27.4    25.6    28.4    26.2     8.4    20.8    48.8    96.5   129.5   162.8   860  
    2019    105.4    24.6    20.8    40.9    32.8    12.9    24.1    18.0    69.6    72.6    55.6    99.8   577  
    2018    147.8    71.6    10.4    41.1    12.2    20.6     0.0     1.3    34.5    21.3   105.4   129.5   596  
    2017     26.7    63.0    92.7    44.2    22.9    19.0     1.3     2.0    18.3    83.3   130.5   114.5   618  
    2016     53.9   107.9    64.2    12.2    11.2    18.5    14.0     5.8    29.2   110.2    75.2    86.1   588  
    2015     93.2    68.6    78.5    11.4     1.5     4.6    17.0    29.5    40.4   100.5   154.7   131.3   731  
    2014     96.8   127.3   113.3    46.5    20.1     4.1     5.1    12.5    23.1    98.3    98.3    87.4   732  
    2013     58.7    44.4    90.9    70.1    35.6     6.3                     0.0    10.1    45.4    44.9        
    2012     93.5    63.0    88.9    35.5    18.5    29.5    13.7     2.5     1.5   123.4    95.8    89.1   655  
    2011    131.3    65.3    99.3    82.8    50.0     6.3    13.2     8.9    23.6    55.1   100.3    49.0   685  
    2010     63.5    22.9    97.8    46.0    51.1    14.7     0.8     0.0    69.1    51.6    89.9   143.8   651  
    2009                             39.9    40.1     4.3     9.4    17.3    33.8    59.4   204.7    50.8        
 Average     40      26      14       9      10      37      68     107      99      98      70      69     669  
 Std Dev     21      15       9       8       9      26      39      44      39      46      31      35      86