Year	SPI (scale 0-100)
2004	20
2005	20
2006	20
2007	20
2008	20
2009	30
2010	40
2011	40
2012	40
2013	20
2014	20
2015	40
2016	46.6
2017	60
2018	60
2019	60
2020	60
2021	60
2022	50