Year	scale 0 - 100
2004	35.13513513513514
2005	37.83783783783784
2006	41.62162162162162
2007	40.26315789473684
2008	37.36842105263158
2009	36.578947368421055
2010	37.63157894736842
2011	38.1578947368421
2012	39.21052631578947
2013	41.282051282051285
2014	44.1025641025641
2015	44.25
2016	41
2017	40.5
2018	40.25
2019	39.5
2020	40.25