Year	SPI (scale 0-100)
2005	34.7375
2006	35.925
2007	36.625
2008	36.4875
2009	37.1125
2010	35.3
2011	36.925
2012	36.48125
2013	35.8125
2014	35.6625
2015	39.33125
2016	40.94375
2017	41.0375
2018	42.975
2019	42.1625
2020	54.79375
2021	64.13125
2022	64.13125