Year	%
1997	12.2448979591837
1998	12.2448979591837
1999	12.2448979591837
2000	12.2448979591837
2001	12.2448979591837
2002	10.2040816326531
2003	10.2040816326531
2004	10.2040816326531
2005	10.2040816326531
2006	10.2040816326531
2007	10.2040816326531
2008	10.2040816326531
2009	10.2040816326531
2010	10.2040816326531
2011	10.2040816326531
2012	10.2040816326531
2014	9.52380952380952
2015	8.84353741496599
2016	8.84353741496599
2017	8.84353741496599
2018	8.84353741496599
2019	9.52380952380952
2020	27.891156462585
2021	27.2727272727273
2022	28.5714285714286
2023	28.5714285714286