Year	SPI (scale 0-100)
2005	42.19375
2006	42.9875
2007	44.38125
2008	43.6625
2009	44.2875
2010	44.88125
2011	46.56875
2012	49.5
2013	49.0125
2014	49.44375
2015	56.7
2016	63.2625
2017	70.35625
2018	71.13125
2019	71.3625
2020	73.89375
2021	87.76875
2022	87.76875