Year	SPI (scale 0-100)
2005	51.58125
2006	51.325
2007	54.4
2008	53.88125
2009	53.88125
2010	53.76875
2011	54.3625
2012	54.3625
2013	55.03125
2014	56.825
2015	59.4875
2016	59.08125
2017	60.175
2018	58.70625
2019	55.68125
2020	68.09375
2021	73.1125
2022	73.1125