Year SPI (scale 0-100) 2005 62.3625 2006 62.9625 2007 62.40625 2008 66.675 2009 68.7 2010 65.48125 2011 67.4125 2012 68.6625 2013 69.8375 2014 69.56875 2015 68.7 2016 68.8625 2017 69.40625 2018 66.825 2019 65.20625 2020 76.51875 2021 87.35 2022 87.35