Year	SPI (scale 0-100)
2005	64.525
2006	64.81875
2007	66.79375
2008	66.5875
2009	69.9625
2010	66.03125
2011	68.44375
2012	67.675
2013	66.9875
2014	65.2625
2015	63.2625
2016	64.75
2017	67.225
2018	74.30625
2019	73.29375
2020	80.49375
2021	86.825
2022	86.825