Year	SPI (scale 0-100)
2005	20.7875
2006	21.23125
2007	21.93125
2008	21.875
2009	21.875
2010	22.45625
2011	22.675
2012	23.45625
2013	22.825
2014	22.3625
2015	24.675
2016	26.10625
2017	25.8875
2018	26.1
2019	26.7875
2020	34.25
2021	38.65
2022	38.65