Year SPI (scale 0-100) 2005 57.28125 2006 60.4875 2007 59.81875 2008 60.34375 2009 61.19375 2010 57.45 2011 56.68125 2012 62.6875 2013 63.35625 2014 61.94375 2015 49.71875 2016 49.55 2017 45.3875 2018 50.425 2019 50.8375 2020 57.4 2021 62.1875 2022 62.1875