Year	SPI (scale 0-100)
2005	44.7875
2006	44.8375
2007	46.2375
2008	46.58125
2009	46.8625
2010	46.5125
2011	47.325
2012	50.03125
2013	49.5375
2014	50.91875
2015	61.21875
2016	66.09375
2017	77.93125
2018	77.9125
2019	77.56875
2020	79.1
2021	87.2375
2022	87.2375