Year SPI (scale 0-100) 2005 16.25 2006 16.25 2007 25.10625 2008 25.05 2009 25.05 2010 23.71875 2011 22.43125 2012 13.01875 2013 13.01875 2014 12.90625 2015 12.98125 2016 12.925 2017 13.5875 2018 13.88125 2019 14.1125 2020 22.20625 2021 24.05 2022 24.05