Year	SPI (scale 0-100)
2005	51.71875
2006	53.38125
2007	53.38125
2008	54.5625
2009	50.175
2010	46.44375
2011	47.2125
2012	56.61875
2013	55.8125
2014	58.65
2015	55.125
2016	54.49375
2017	54.8875
2018	54.6125
2019	52.65625
2020	61.21875
2021	68.23125
2022	68.23125