Year	SPI (scale 0-100)
2005	9.8
2006	9.8
2007	9.8
2008	9.8
2009	9.8
2010	9.83125
2011	9.83125
2012	9.275
2013	9.275
2014	9.275
2015	9.24375
2016	9.1875
2017	9.825
2018	10.71875
2019	11.28125
2020	16.14375
2021	16.0375
2022	16.0375