Year	SPI (scale 0-100)
2005	56.3375
2006	57.13125
2007	57.825
2008	58.175
2009	59.9125
2010	60.59375
2011	59.15625
2012	60.05
2013	59.01875
2014	60.28125
2015	66.83125
2016	71.88125
2017	78.85
2018	78.5875
2019	76.55
2020	79.075
2021	85.575
2022	85.575