Year	%
1997	27.6264591439689
1998	27.6264591439689
2000	26.4591439688716
2002	30.7392996108949
2003	30.7392996108949
2004	33.7254901960784
2005	36.1867704280156
2006	35.0194552529183
2007	40
2008	40
2009	38.5214007782101
2010	38.5214007782101
2011	37.3540856031128
2012	37.3540856031128
2013	36.5758754863813
2014	36.5758754863813
2016	35.7976653696498
2017	38.1322957198444
2018	38.9105058365759
2019	40.1574803149606
2020	40.8560311284047
2021	44.7470817120623
2022	44.7470817120623
2023	43.1906614785992