Year	%
1997	5.91133004926108
1998	5.91133004926108
1999	12.1359223300971
2001	9.6969696969697
2002	9.6969696969697
2003	9.6969696969697
2004	9.6969696969697
2005	17.3652694610778
2006	17.9640718562874
2007	18.562874251497
2008	18.562874251497
2009	17.4698795180723
2010	16.969696969697
2011	16.969696969697
2012	16.969696969697
2013	16.969696969697
2014	16.969696969697
2015	16.969696969697
2016	14.3712574850299
2017	22.1556886227545
2018	22.1556886227545
2019	22.1556886227545
2020	22.1556886227545
2021	22.1556886227545