Year	SPI (scale 0-100)
2005	66.2375
2006	66.49375
2007	67.975
2008	68.4625
2009	69.0875
2010	64.60625
2011	61.79375
2012	71.825
2013	71.225
2014	70.09375
2015	65.79375
2016	66.93125
2017	59.2125
2018	49.7125
2019	45.38125
2020	53.78125
2021	64.23125
2022	64.23125