Year	SPI (scale 0-100)
2005	44.9
2006	46.16875
2007	47.125
2008	46.775
2009	47.66875
2010	58.68125
2011	59.075
2012	61.2875
2013	61.4
2014	61.20625
2015	67.89375
2016	71.0875
2017	77.09375
2018	76.88125
2019	75.2875
2020	77.7
2021	88.7125
2022	88.7125