Year	SPI (scale 0-100)
2005	48.9625
2006	53.94375
2007	55.7625
2008	56.31875
2009	61.80625
2010	56.85
2011	57.6
2012	58.05625
2013	58.7
2014	62.88125
2015	59.95625
2016	62.25625
2017	69.275
2018	66.04375
2019	65.3875
2020	70.075
2021	77.8
2022	77.8