Year SPI (scale 0-100) 2005 40.20625 2006 50.91875 2007 52.21875 2008 52.6375 2009 52.6375 2010 50.475 2011 50.18125 2012 50.7 2013 49.5125 2014 51.5125 2015 60.59375 2016 62.20625 2017 72.2125 2018 71.5 2019 71.51875 2020 71.43125 2021 82.88125 2022 82.88125