Year 1 2 3 4 5 6 7 8 9 10 11 12 Total 2019 107.4 12.2 18.0 33.5 25.6 9.7 17.3 14.5 59.4 59.4 55.4 7.4 420 2018 105.2 49.0 13.2 54.3 4.1 18.0 0.2 0.0 22.1 57.7 112.0 136.6 572 2017 27.2 64.7 80.0 37.1 23.9 17.5 2.5 1.8 19.8 88.6 98.3 68.6 530 2016 55.3 103.1 60.0 10.1 7.1 27.7 7.6 7.1 30.5 105.9 81.0 96.0 591 2015 37.6 30.0 69.3 19.1 1.5 3.8 9.9 26.9 39.9 85.3 127.7 129.8 581 2014 88.1 126.5 73.9 45.2 20.6 4.8 6.3 14.7 43.4 88.6 85.9 75.4 674 2013 57.6 43.7 84.1 58.9 39.4 9.9 0.2 0.0 144.0 18.8 30.0 37.1 524 2012 84.8 66.0 61.2 32.0 21.8 35.5 15.2 2.5 1.5 122.7 89.9 93.2 627 2011 115.3 54.9 59.7 67.0 53.1 6.9 15.0 7.9 21.8 52.8 109.7 42.7 607 2010 55.3 22.3 59.4 28.7 28.4 13.5 1.0 0.0 58.7 38.6 60.7 131.6 498 2009 72.6 22.1 42.7 50.3 37.3 5.3 9.6 16.8 36.8 103.1 173.0 39.4 609 2008 54.4 39.3 49.0 36.6 10.1 11.7 5.8 30.7 0.2 30.0 104.4 53.8 426 2007 172.2 68.6 89.4 23.6 8.9 21.6 25.4 14.0 12.4 45.4 52.1 113.3 647 2006 2.8 17.8 2.5 4.6 28.4 36.6 250.7 84.5 Average 79 54 58 38 20 15 8 10 37 67 102 79 561 Std Dev 39 33 23 16 16 9 8 10 36 32 56 40 78