Year	%
1998	11.864406779661
1999	5.98290598290598
2000	14.4067796610169
2001	14.4067796610169
2002	18.4357541899441
2003	18.4357541899441
2004	18.4357541899441
2005	30.5084745762712
2006	30.5084745762712
2007	30.5084745762712
2008	30.5084745762712
2009	31.3559322033898
2010	32.0754716981132
2011	30.4761904761905
2012	30.4761904761905
2013	30.4761904761905
2014	30.4761904761905
2015	36.3636363636364
2016	36.3636363636364
2017	36.3636363636364
2018	36.3636363636364
2019	36.3636363636364
2020	38.2113821138211
2021	38.2113821138211
2022	38.2113821138211
2023	38.2113821138211