Year SPI (scale 0-100) 2005 64.825 2006 68.09375 2007 68.09375 2008 67.81875 2009 69.8375 2010 67.70625 2011 67.9875 2012 71.78125 2013 70.53125 2014 69.95625 2015 71.49375 2016 72.5375 2017 72.45625 2018 74.58125 2019 73.6375 2020 83.775 2021 91.8375 2022 91.8375