Year	SPI (scale 0-100)
2005	52.56875
2006	52.275
2007	53.35625
2008	53.63125
2009	65.975
2010	63.40625
2011	62.08125
2012	64.3375
2013	64.7375
2014	64.61875
2015	68.05625
2016	69.525
2017	76.5
2018	74.6875
2019	74.075
2020	74.90625
2021	82.95625
2022	82.95625