Year	SPI (scale 0-100)
2005	36.775
2006	38.4
2007	38.79375
2008	38.68125
2009	38.98125
2010	41.35
2011	41.4125
2012	41.3375
2013	40.30625
2014	39.95
2015	37.04375
2016	37.44375
2017	39.3
2018	37.44375
2019	37.9125
2020	45.08125
2021	51.65625
2022	51.65625