Year	SPI (scale 0-100)
2005	31.975
2006	34.5625
2007	34.5625
2008	35.4875
2009	35.125
2010	33.325
2011	33.1375
2012	43.8625
2013	43.8625
2014	46.60625
2015	42.66875
2016	42.78125
2017	36.9375
2018	37.04375
2019	34.0875
2020	47.46875
2021	56.38125
2022	56.38125