Year	SPI (scale 0-100)
2005	46.44375
2006	46.4875
2007	46.04375
2008	45.81875
2009	45.15
2010	43.05625
2011	42.19375
2012	45.10625
2013	44.4125
2014	50.15
2015	47.675
2016	49.4375
2017	48.69375
2018	49.26875
2019	46.875
2020	67.43125
2021	69.675
2022	69.675