Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2021     13.7    30.5                                                                                        
    2020      0.5            23.4    25.4    55.4    63.0    19.0    46.5    36.1   133.1   154.4    17.5        
    2019                      2.3    27.2     3.3    13.4     4.3     0.0     1.0    17.8     9.7   105.9        
    2018    435.4   100.5    55.9   144.8     6.8    50.3     9.7     7.1   130.8   100.8   118.8                
    2017     21.6                     3.6    49.5    53.8     1.0     2.5    54.3   130.3   357.9   111.5        
    2016    254.5   185.2   365.3    19.3    33.5    64.8    46.5    40.1    46.0   374.6   284.0   138.2  1852  
    2015     57.9   152.6             0.5     3.8     2.0    13.2    30.5    39.1    49.5   125.2   422.6        
    2014    115.5   217.4   171.2    11.9    16.3    24.4    27.9    13.2    58.2   191.7   112.8   228.8  1189  
    2013    128.5   108.7   124.4    46.7    92.5    49.0     0.0    34.0   134.9    22.6    98.5    24.4   864  
    2012    251.7   141.5    16.8    76.2    47.5    65.3    36.1     5.3     6.9   158.0   192.3   259.8  1257  
    2011            153.7   320.0    73.9    79.2    19.5    29.2     3.0    78.7    89.9   237.7    77.4        
    2010    265.9   158.7   144.8   132.8    99.1    28.7     0.5    25.4    35.0    38.3    23.1   101.1  1054  
    2009                     85.8    22.8    64.8    15.5    16.0    13.2    54.3   158.0   410.2    89.4        
 Average    131      49      46      37      17      18      56     122     177     143     155     139    1243  
 Std Dev    125      49      34      23      15      16      42      98     125     118     143      54     371