Year	SPI (scale 0-100)
2005	47.86875
2006	49.71875
2007	50.46875
2008	51.7375
2009	53.325
2010	53.975
2011	52.1625
2012	52.1625
2013	50.90625
2014	48.08125
2015	48.41875
2016	50.06875
2017	52.19375
2018	55.5875
2019	53.19375
2020	62.10625
2021	76.2875
2022	76.2875