Year SPI (scale 0-100) 2005 68.3375 2006 69.08125 2007 70.1375 2008 71.45625 2009 71.60625 2010 71.3625 2011 72.08125 2012 76.36875 2013 76.55625 2014 75.13125 2015 79.11875 2016 81.425 2017 82.9375 2018 84.01875 2019 83.11875 2020 85.575 2021 92.3375 2022 92.3375