Year	SPI (scale 0-100)
2004	30
2005	30
2006	30
2007	40
2008	40
2009	40
2010	60
2011	60
2012	60
2013	60
2014	60
2015	80
2016	86.6
2017	86.6
2018	86.6
2019	80
2020	80
2021	80
2022	80