Year SPI (scale 0-100) 2005 64.86875 2006 64.9625 2007 65.35625 2008 67.5125 2009 68.2125 2010 65.1 2011 66.3125 2012 66.3125 2013 65.91875 2014 66.1875 2015 70.15 2016 72.91875 2017 74.5625 2018 74.2375 2019 73.01875 2020 78.46875 2021 85.08125 2022 85.08125