Year	%
1997	7.8125
1998	7.8125
2000	10.3626943005181
2001	10.3626943005181
2002	10.3626943005181
2003	10.4712041884817
2004	9.1324200913242
2005	9.1324200913242
2006	9.1324200913242
2007	10.0456621004566
2008	10.8108108108108
2009	9.90990990990991
2010	9.90990990990991
2011	10.4072398190045
2012	10.4072398190045
2013	10.3603603603604
2014	10.3603603603604
2015	10.3603603603604
2016	10.3603603603604
2017	10.3603603603604
2018	13.9013452914798
2019	14.4144144144144
2020	14.8648648648649
2021	14.8648648648649
2022	13.5746606334842
2023	13.5135135135135