Year	%
1997	6.62768031189084
1998	6.62768031189084
1999	5.65302144249513
2000	5.65302144249513
2001	6.82261208576998
2002	6.23781676413255
2003	8.57699805068226
2004	8.57699805068226
2005	8.57699805068226
2006	8.7719298245614
2007	8.96686159844054
2008	8.96686159844054
2009	8.7719298245614
2010	8.57699805068226
2011	8.57699805068226
2012	8.57699805068226
2013	8.57699805068226
2014	9.94152046783626
2015	9.94152046783626
2016	9.94152046783626
2017	10.7212475633528
2018	15.009746588694
2019	15.009746588694
2020	14.6198830409357
2021	15.2046783625731
2022	17.7387914230019
2023	17.5438596491228