Year	SPI (scale 0-100)
2005	36.475
2006	34.9875
2007	34.875
2008	35.09375
2009	35.7875
2010	35.5125
2011	35.825
2012	35.5375
2013	34.86875
2014	34.70625
2015	34.50625
2016	33.81875
2017	34.7
2018	34.8625
2019	35.8375
2020	38.55
2021	49.45625
2022	49.45625