Year SPI (scale 0-100) 2005 70.81875 2006 71.56875 2007 72.6625 2008 76.03125 2009 77.59375 2010 72.5875 2011 73.3875 2012 75.34375 2013 71.8625 2014 71.14375 2015 66.84375 2016 70.8875 2017 71.9625 2018 72.4625 2019 70.38125 2020 71.41875 2021 81.98125 2022 81.98125