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