Year	SPI (scale 0-100)
2005	40.1125
2006	54.6375
2007	55.33125
2008	55.6125
2009	56.3125
2010	53.1625
2011	57.3125
2012	58.05625
2013	59.475
2014	62.375
2015	59.69375
2016	57.83125
2017	64.35
2018	64.225
2019	62.05
2020	66.5
2021	78.95625
2022	78.95625