Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2019                                      9.9            12.4            21.6                                
    2018             52.3    36.8    82.0     3.3    31.2     7.4    14.0    89.6            47.8    96.8        
    2017     37.8   122.7   103.1   106.2    28.2    24.9     1.5     3.3    41.4    75.9   173.2    35.8   754  
    2016    142.4   111.2   234.2    17.8    41.9    48.8    25.1    11.2    35.3   222.0   183.9    53.8  1128  
    2015     66.8    96.3    48.2    31.5     3.0    13.5    12.4    23.1    35.8    60.9    86.6   264.9   743  
    2014     79.0   174.0   115.3    44.4    30.0    16.8    28.7    11.2    33.5   141.0    76.2   145.3   895  
    2013                             13.0    63.7    42.2     0.0     5.8    55.6    18.2    83.8    21.0        
    2012                    149.6    63.2    39.1    59.9    18.5     0.2     1.0   119.1   125.7    95.0        
    2010    303.8   151.4   122.4   155.0    93.7    29.2     2.0     0.0     0.0     0.0                        
    2009     70.3    12.9    71.6    30.0    76.4    16.2    15.8    21.3    56.1   167.9   432.1    92.7  1063  
    2008     23.9    51.5    92.4    50.0    46.0    40.9    21.6    21.8    22.1    77.0    73.9   130.5   652  
    2007                                                                              1.5   144.5                
 Average     88     143     103      97     108      59      40      32      13      11      36     104     872  
 Std Dev     74     111      96      55      59      44      29      15      10       9      26      73     190