Year	SPI (scale 0-100)
2005	68.575
2006	68.5625
2007	68.7
2008	68.49375
2009	65.36875
2010	62.13125
2011	66.94375
2012	68.19375
2013	70.7375
2014	70.33125
2015	65.3375
2016	70.26875
2017	76.31875
2018	71.38125
2019	71.4125
2020	74.66875
2021	81.46875
2022	81.46875