Year SPI (scale 0-100) 2004 20 2005 20 2006 20 2007 20 2008 0 2009 0 2010 20 2011 20 2012 20 2013 20 2014 20 2015 20 2016 6.6 2017 6.6 2018 6.6 2019 6.6 2020 16.6 2021 36.6 2022 36.6