Year SPI (scale 0-100) 2004 30 2005 40 2006 40 2007 40 2008 40 2009 40 2010 60 2011 60 2012 60 2013 60 2014 60 2015 80 2016 100 2017 100 2018 100 2019 100 2020 100 2021 100 2022 100