Year        1        2        3        4        5        6        7        8        9       10       11       12    Total
    2013       0.0      0.0      0.0      0.0      0.0      0.0                                                               
    2012                         0.5     10.7     17.0     21.1     18.0      3.6      6.6      7.4      4.3      0.0         
    2011     123.2     85.4    211.3     44.9     55.9     15.5     24.9      1.5      8.9      6.8      8.9      0.0    587  
    2010      50.0      5.8    116.3     98.3     62.0     18.8      1.5     24.6     65.0     65.5    138.4    215.6    862  
    2009      45.4     52.0    101.8     37.4     53.8     10.4      0.5     13.5     13.0    136.7    157.2     38.6    660  
    2008     127.7     38.6     86.4     53.6     42.2     39.6     24.6     28.7     18.8     72.6    105.2     55.6    694  
    2007       2.0     46.7     65.8     67.8     10.9      0.0      0.0      0.2      0.0      5.3     99.8    104.4    403  
    2006                                           7.1     27.7     13.2      3.0     23.6     10.4    239.0     41.1         
 Average      58       38       83       45       31       17       12       11       19       44      108       65      641   
 Std Dev      56       32       73       33       25       13       11       12       22       50       83       75      166