Year	%
1997	3.15789473684211
1998	3.15789473684211
1999	3.15789473684211
2000	3.42105263157895
2001	3.42105263157895
2002	6.16966580976864
2003	6.16966580976864
2004	6.16966580976864
2005	6.16966580976864
2006	6.16966580976864
2007	7.7120822622108
2008	7.7120822622108
2009	7.7120822622108
2010	7.7120822622108
2011	7.96915167095116
2012	31.6017316017316
2013	31.6017316017316
2014	31.6017316017316
2015	31.6017316017316
2016	31.6017316017316
2017	25.7575757575758
2018	25.7575757575758
2019	25.7575757575758
2020	25.7575757575758
2021	8.10810810810811
2022	8.10810810810811
2023	7.86240786240786