Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2021     75.9    96.5    38.1    18.8    22.3    34.0     0.0     4.8    26.4    34.3    64.8     0.0   416  
    2020     51.8    18.3    11.4    18.3    24.1    35.6    18.8    25.4     1.8    39.9    18.8   161.2   425  
    2019     81.5    69.8     3.3    65.5    17.3    18.5    38.1    24.4    60.7    66.8    26.7     9.9   483  
    2018     69.9    78.0    54.4   106.7     6.8    43.4     3.6     3.8    83.3    75.2    64.0   125.2   714  
    2017     65.5    80.8   110.5   171.0    47.2    40.6     0.5     3.8    37.8    73.4   186.2    71.6   889  
    2016    186.7   128.2   237.0    22.4    22.1    56.1    30.7                   259.6   208.6   112.0        
    2015     90.6   154.9    90.9    43.2     7.6    11.7    15.7    26.9    34.0    91.7    89.9    59.4   717  
    2014     94.5   185.1   132.8    46.7    39.1    20.3    10.7     2.8     3.8     5.8    95.7   164.6   802  
    2013    114.3    69.6    98.8    43.7    60.2    58.2     0.0     6.3   110.8    22.3    95.2    32.5   712  
    2012    196.1   126.7   155.2    56.9    46.7    67.8    15.8            10.9   133.1   178.3   211.6        
    2011     84.8    97.5   159.3    52.8    56.1    22.1    30.5     1.3     0.0    27.4    24.2    82.5   638  
    2010    218.2     6.3     0.0    74.4    73.9    30.7     2.3    27.2    72.6    72.6   138.4   125.2   842  
    2009                     54.6    24.6    61.2    13.0    14.0    19.8    66.3   140.2   295.7    91.7        
 Average     88      57      37      35      14      13      42      80     114      96     111      93     663  
 Std Dev     71      42      22      18      13      11      36      67      83      63      57      52     170