Year SPI (scale 0-100) 2004 20 2005 20 2006 20 2007 20 2008 20 2009 20 2010 20 2011 20 2012 40 2013 30 2014 30 2015 50 2016 70 2017 70 2018 56.6 2019 70 2020 80 2021 80 2022 80