Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2023     10.9    24.1    12.7     7.8     7.4    11.4     6.9     3.3     4.6     4.8                        
    2022     63.5    25.9    25.4    31.5    18.0    19.3     9.4     0.2     0.0    52.3    31.0    35.6   312  
    2021     58.2    44.4    17.3     9.9     5.3     3.6     0.0     4.3    42.9    54.1   148.1    52.3   440  
    2020    119.1    57.1    13.7    17.5    16.5    10.4     5.6     8.9    33.3    47.2    69.8    82.5   482  
    2019     61.7     8.4    13.7    23.6    23.1     5.3    10.2    13.0    39.1    42.7    43.4    73.1   357  
    2018     70.6    47.0     7.6    39.1     6.8    13.2     0.0     1.8    21.8    40.1    96.5    75.4   420  
    2017     15.2    34.0    50.5    26.9    16.2     6.1     0.8     0.8     8.6    57.6    80.8    69.8   367  
    2016     23.9    68.3    33.5    11.4     5.1    24.6     3.6     2.8    17.8    70.1    40.8    73.9   376  
    2015     60.7    18.0    36.6     6.1     1.3     1.5     4.1    13.5    22.1    61.5   100.8    78.5   405  
    2014     52.8    68.3    66.0    12.4    11.2     2.3     3.3     8.4    21.1    24.6    54.1    39.6   364  
    2013                                                      0.0    14.5    92.2    15.2    35.8    23.1        
 Average      4       6      28      43      70      60      54      40      28      19      11      10     391  
 Std Dev      4       5      25      20      37      21      32      21      19      11       7       8      50