Year SPI (scale 0-100) 2004 20 2005 40 2006 40 2007 40 2008 40 2009 40 2010 60 2011 50 2012 60 2013 60 2014 50 2015 80 2016 100 2017 100 2018 100 2019 100 2020 100 2021 90 2022 90