Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2021      4.3   173.2    59.1    32.0    12.2                                                                
    2020    274.6   144.8    61.0    34.8    21.3     3.3     1.8     3.0    23.6     0.0     4.3     0.0   572  
    2019    128.3    38.1    16.5    55.6    20.8    10.2    21.6    18.8    67.3    89.9    73.6   145.3   686  
    2018    161.0    91.2    29.2    73.4     5.6    12.4     0.0     0.8    42.4    56.1   150.1   181.6   804  
    2017      0.5    21.8     7.1    11.9    16.5             1.0     3.0    21.3   117.3   164.6   133.8        
    2016     83.0   130.5    17.8    12.7     8.6    15.2     4.6     1.3     1.5     3.8     1.5     7.6   288  
    2015    121.1    81.5   104.6    40.6     4.1     3.8    10.2    23.6    21.1   117.8   171.9     0.5   701  
    2014    126.2   156.2     0.0    59.9    29.2    10.1     5.1    13.0    36.5   106.7   129.8   110.0   783  
    2013      0.0     0.0     1.0   103.9    47.0    18.3     0.0    18.3   156.9    31.9    81.5    68.3   527  
    2012                                             20.8    12.2     0.0     0.0     0.0    36.0     0.0        
 Average     12       6       9      41      58      90      72     100      93      33      47      18     623  
 Std Dev      6       7       9      48      51      67      73      90      63      35      30      13     178