Year	SPI (scale 0-100)
2005	50.98125
2006	50.93125
2007	51.1875
2008	52.65
2009	54.16875
2010	56.21875
2011	57.125
2012	58.375
2013	58.75
2014	58.025
2015	64.1625
2016	68.2
2017	76.025
2018	72.9625
2019	73.5125
2020	76.825
2021	84.88125
2022	84.88125