Year	SPI (scale 0-100)
2005	49.8
2006	52.35
2007	52.74375
2008	52.99375
2009	55.73125
2010	55.44375
2011	55.51875
2012	57.24375
2013	56.325
2014	53.475
2015	44.5375
2016	47.21875
2017	49.125
2018	51.075
2019	50.68125
2020	65.41875
2021	70.59375
2022	70.59375