Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2019      0.0                                                                                                
    2018     79.0   122.9    19.0    35.6     1.0     1.8     0.0     0.2     0.2     0.0     0.0     0.0   260  
    2017     32.0    80.8    85.6    41.1    21.1    17.8     1.0     2.0    16.0    88.1    92.2    70.6   548  
    2016     60.7   121.4    70.1    12.2    11.7    21.1     9.9     0.0     0.2   124.7    87.9   121.4   641  
    2015    101.1    79.5    91.9    12.9     1.5     4.8     1.5            19.8   109.4   173.7   142.0        
    2014     91.2   141.7   118.6    49.8    23.1     4.3     2.3    13.5    46.7    31.5   102.9    87.9   713  
    2013     63.7    45.4    72.4    68.3    38.9    11.2     0.0     8.4   113.0    17.0    63.7    42.7   545  
    2012    105.1    69.3    64.3    37.8    19.3    35.3    16.5     3.3     1.3   135.1   102.4   117.8   708  
    2011     71.3    77.5    80.8    80.0    61.4     6.9    18.3    11.7     0.0    65.8   140.2    55.9   670  
    2010    109.4    26.1    96.0    45.7    54.9    16.2     0.8    21.6    80.7    56.9    81.3   162.8   752  
    2009     87.1    20.8    63.5    53.6    31.0     4.8     8.6    17.3    36.3   126.5   104.6    53.1   607  
    2008     56.1    45.4    47.3    27.9    12.2    13.2     6.3    29.5     8.9    31.0   111.0    67.6   456  
    2007    205.0    72.6    98.8    27.7     8.9    20.1    25.7    14.5    14.5    55.3    68.0   143.0   754  
    2006                                      0.5    21.1     3.0     3.3    23.6    38.9   278.6   113.0        
 Average     22      14       7      10      28      68     108      91      82      75      76      41     604  
 Std Dev     20       9       8       9      34      45      65      47      48      38      26      20     148