Year	%
1997	11.6564417177914
1999	11.8012422360248
2000	11.8012422360248
2001	11.8012422360248
2002	12.0481927710843
2003	12.0481927710843
2004	12.0481927710843
2005	12.1212121212121
2006	8.43373493975904
2007	8.43373493975904
2008	8.43373493975904
2009	8.43373493975904
2010	12.6506024096386
2011	12.1212121212121
2012	12.1212121212121
2013	12.1212121212121
2014	19.8795180722892
2015	19.8795180722892
2016	19.8795180722892
2017	18.6746987951807
2018	18.1286549707602
2019	18.7134502923977
2020	18.3431952662722
2021	18.8235294117647
2022	28.8770053475936
2023	28.8770053475936