Year	SPI (scale 0-100)
2005	39.4
2006	42.55
2007	42.55
2008	44.025
2009	46.35625
2010	43.79375
2011	39.9625
2012	39.9625
2013	36.0375
2014	37.3125
2015	45.34375
2016	46.15625
2017	47.2
2018	45.9375
2019	46.1875
2020	66.14375
2021	75.4125
2022	75.4125