Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2019     101.3     31.2      2.5                                                                                          
    2018     108.2     76.2     15.5     72.9      7.1     22.6      0.2      1.5     40.6     57.7     95.5     70.4    568  
    2017      22.9     74.9    102.8     62.2     28.2     22.9      1.8      2.0     24.4     95.7    100.1     71.6    609  
    2016      63.0    121.4     69.9     13.7      9.1     29.0     11.7      6.1     36.8    115.3     78.5    113.8    668  
    2015      61.5     92.7     81.0     18.5      2.3      4.8     13.5     32.5     52.8     97.2    160.8    104.6    722  
    2014      33.0     16.0               5.8     17.8      4.8      8.1     14.5     51.0    102.6    105.7     85.8         
    2013      73.1     51.3     84.8     61.7     40.6     11.9      0.0      8.1    139.2     21.6     69.6     41.9    604  
    2012     101.1     79.7     80.0     44.5     24.6     42.4     19.6      1.8      1.3    151.6    110.2    121.6    778  
    2011     137.9     70.4     78.4     88.1     67.6     10.4     19.0     10.7     29.4     65.0    126.2     50.0    753  
    2010     118.1     27.4     67.6     36.6     48.8     16.0      1.3     20.3     76.7     53.1     78.0    150.9    695  
    2009      75.7     21.6     46.0     54.6     41.1      5.3      9.7     17.5     37.6     56.6      1.0     52.8    420  
    2008      54.3     40.6     50.5     45.7     10.9     12.2      5.3     27.9      8.9     32.2    109.7     68.8    467  
    2007     176.0     66.0     93.2     29.0      9.4     20.3     26.7     17.0     15.2     52.6     61.2    135.6    702  
    2006                                           2.5     19.8      3.3      4.1     25.6     36.8    260.9    100.1         
 Average      87       59       64       44       24       17        9       13       42       72      104       90      635   
 Std Dev      43       31       30       25       20       11        9       10       35       38       60       34      114