Year	SPI (scale 0-100)
2005	60.14375
2006	60.075
2007	61.13125
2008	62.375
2009	66.4125
2010	62.14375
2011	63.68125
2012	63.68125
2013	62.48125
2014	64.33125
2015	68.9625
2016	75.65
2017	81.00625
2018	82.04375
2019	81.225
2020	83.9
2021	86.6375
2022	86.6375