Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2023     38.1    64.5    35.3    23.9    17.8    19.3    10.9     7.1    12.2    62.5    54.1                
    2022     91.9    39.9    10.6     0.8    21.1    13.7    16.0     0.8     0.8    80.7    77.7   102.1   456  
    2021      0.2    38.6    10.4    22.9    17.3    16.5     0.0     5.8    69.6     8.6    14.2     5.6   210  
    2020     39.9   108.7     8.9     6.1    11.9    15.5     8.6    13.5    12.7     3.2     2.0     0.8   232  
    2019     54.3    29.5    26.1    44.4    37.8    13.2    23.1    19.6    81.5    21.8     0.0     0.0   351  
    2018      1.2    57.1    15.7    83.6     6.6    22.9     0.5     2.0    33.3    58.9    86.9    52.1   421  
    2017     35.0    85.6    27.9     2.0     5.6    23.9     3.0     2.0    27.2    95.2    43.4     7.8   359  
    2016     67.6   121.2    71.1    13.0     8.4    34.3     9.6     9.9    36.1    70.8    83.0   143.5   668  
    2015     91.4    17.8     1.8     0.0     0.8     3.6     9.8    27.4    38.6    99.8   173.5   151.1   616  
    2014                      8.0    35.6    20.2     4.0     5.6    13.6    45.4    32.6    11.6    91.0        
    2011    122.4    45.4     4.8     0.0     0.0     1.6     2.4     3.2     0.6     0.0     0.0                
    2010                              9.6    63.0    19.0     1.3    21.8    95.5    31.3    55.2    75.8        
 Average     20      18      16       8      11      38      47      50      63      54      61      20     414  
 Std Dev     25      18       9       7       9      31      36      51      59      40      34      20     164