Year	%
1997	4.80769230769231
1999	8.91089108910891
2000	7.92079207920792
2001	12.8712871287129
2002	12.8712871287129
2003	12.8712871287129
2004	15.8415841584158
2005	21.7821782178218
2006	21.7821782178218
2007	21.7821782178218
2008	21.7821782178218
2009	23.7623762376238
2010	18.8118811881188
2011	19.8019801980198
2012	19.8019801980198
2013	19.8019801980198
2014	17.8217821782178
2015	21.7821782178218
2016	21.7821782178218
2017	22.7722772277228
2018	22.7722772277228
2019	25.7425742574257
2020	24.7524752475248
2021	39.6039603960396
2022	40.5940594059406
2023	38.6138613861386