Year SPI (scale 0-100) 2005 40.46875 2006 42.39375 2007 43.3375 2008 44.28125 2009 44.90625 2010 41.08125 2011 39.9375 2012 33.825 2013 33.78125 2014 33.70625 2015 44.1875 2016 44.51875 2017 46.575 2018 45.9 2019 47.21875 2020 55.89375 2021 71.5875 2022 71.5875