Year SPI (scale 0-100) 2004 20 2005 20 2006 20 2007 20 2008 20 2009 20 2010 20 2011 40 2012 40 2013 40 2014 40 2015 70 2016 90 2017 80 2018 80 2019 80 2020 80 2021 80 2022 80