Year	SPI (scale 0-100)
2004	20
2005	20
2006	30
2007	30
2008	30
2009	30
2010	30
2011	20
2012	20
2013	30
2014	40
2015	60
2016	80
2017	80
2018	80
2019	70
2020	56.6
2021	46.6
2022	60