Year	SPI (scale 0-100)
2005	57.9875
2006	58.23125
2007	59.65
2008	59.3
2009	61.30625
2010	63.01875
2011	64.08125
2012	64.1875
2013	63.225
2014	64.7875
2015	65.4375
2016	64.31875
2017	63.53125
2018	62.4
2019	60.675
2020	63.53125
2021	75.68125
2022	75.68125