Year	SPI (scale 0-100)
2005	63.0125
2006	65.03125
2007	64.475
2008	64.30625
2009	64.2125
2010	63.40625
2011	64.85
2012	66.725
2013	66.99375
2014	64.94375
2015	59.51875
2016	51.21875
2017	53.025
2018	52.84375
2019	51.625
2020	61.26875
2021	70.66875
2022	70.66875