Year SPI (scale 0-100) 2005 77.6125 2006 77.675 2007 77.675 2008 77.11875 2009 78.4625 2010 75.1125 2011 74.2125 2012 76.4 2013 77.8 2014 79.20625 2015 74.20625 2016 79.825 2017 78.9625 2018 78.80625 2019 79.5875 2020 81.2375 2021 90.15625 2022 90.15625