Year	%
1997	22.2222222222222
1998	22.2222222222222
1999	22.2222222222222
2000	25
2001	25
2002	25
2003	26.3888888888889
2004	25
2005	26.9230769230769
2006	26.9230769230769
2007	26.9230769230769
2008	26.9230769230769
2009	26.9230769230769
2010	24.3589743589744
2011	24.3589743589744
2012	24.3589743589744
2013	24.3589743589744
2015	41.3461538461538
2016	41.3461538461538
2017	41.3461538461538
2018	46.1538461538462
2019	42.7083333333333
2020	43.2692307692308
2021	44.2307692307692
2022	44.2307692307692
2023	44.2307692307692