Year	SPI (scale 0-100)
2005	45.1
2006	49.5
2007	50.28125
2008	50.075
2009	50.38125
2010	51.0875
2011	48.3125
2012	48.65625
2013	50.74375
2014	55.99375
2015	65.75
2016	68.6
2017	74.71875
2018	72.6375
2019	68.9
2020	77.00625
2021	79.6625
2022	79.6625