Year	SPI (scale 0-100)
2005	30.86875
2006	29.575
2007	29.4625
2008	30.0875
2009	31.4375
2010	31.325
2011	31.95625
2012	32.85
2013	31.8375
2014	32.3625
2015	35.56875
2016	38.45
2017	40.625
2018	41.825
2019	42.2375
2020	64.7125
2021	71.175
2022	71.175