Year SPI (scale 0-100) 2005 60.05625 2006 60.69375 2007 63.13125 2008 63.8 2009 63.45 2010 59.91875 2011 64.5125 2012 61.65 2013 61.84375 2014 62.625 2015 62.95 2016 62.7125 2017 67.4125 2018 66.56875 2019 66.91875 2020 64.2375 2021 78.45625 2022 78.45625