Year SPI (scale 0-100) 2005 68.15 2006 69.525 2007 70.61875 2008 71.3125 2009 70.53125 2010 66.13125 2011 68.49375 2012 68.49375 2013 69.4625 2014 71.48125 2015 67.89375 2016 70.61875 2017 77.675 2018 78.63125 2019 77.33125 2020 84.00625 2021 90.925 2022 90.925