Year SPI (scale 0-100) 2005 63.3625 2006 68.85 2007 70.24375 2008 71.10625 2009 70.775 2010 68.85625 2011 70.06875 2012 70.06875 2013 69.775 2014 69.8625 2015 78.76875 2016 81.01875 2017 87.60625 2018 88.675 2019 86.08125 2020 82.8375 2021 94.1875 2022 94.1875