Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2021     73.7                                                                                                
    2020    275.6    71.1    28.7    36.1    56.6    55.1    11.9    29.7    79.5   109.2   189.0   227.3  1170  
    2019    124.5    69.6    12.9    51.8    17.0    37.6    28.2    11.7    89.9    80.7    68.0    97.0   689  
    2018    134.9    67.8    27.1    61.7     9.1    19.0     0.8     5.8    81.0    81.0    72.9   154.9   716  
    2017     77.7   129.5   114.8    32.0    10.1    28.2     0.2     3.8    20.8   112.0    94.0   170.9   794  
    2016    193.8   144.0   140.4     3.8     1.8     4.8     1.8     2.5     0.0     0.0     0.5   112.5   606  
    2015    141.9   143.0    98.3    34.0    10.4     2.5    24.6    21.1    59.9     8.4    99.3   273.3   917  
    2014     61.7   147.3    41.4    37.1    41.9    11.4     6.4    13.7    48.2   194.5   127.2   171.9   903  
    2013     87.6    67.3   102.1    73.9    67.6    46.2     0.0    49.0   112.0    22.0    73.1    12.7   714  
    2012    153.9   102.3   123.2    52.6    27.4    40.4    18.3             1.2   125.2     0.0    75.7        
    2011    153.9   111.5   174.7    46.2    76.9     7.6    15.7     7.1    62.5    56.9   160.5    75.9   949  
    2010    210.8    99.8   157.7    83.1    62.2    20.8     0.0    31.5    95.0    93.9    79.5   243.1  1177  
    2009     89.9    46.2   107.7    59.2    52.8    10.7     7.3    10.9    65.0   169.9   338.6    87.1  1045  
    2008     17.3    42.9    75.9    54.6    11.9    40.6    15.2    29.7    25.1    70.3   141.7   104.1   630  
 Average    128      96      93      48      34      25      10      18      57      86     111     139     859  
 Std Dev     68      37      52      20      26      17      10      14      36      58      88      76     199