Year	%
2001	9.242695433014099
2002	7.832117560598947
2003	9.3800399559659
2004	10.591989197089504
2005	10.534176366621704
2006	9.933846352409786
2007	7.983063789344191
2008	8.020313594323339
2009	7.736878805917359
2010	7.381218444581935
2011	7.159154219549286
2012	7.1794817449404285
2013	7.104969997986838
2014	7.042887035250793
2015	6.858324756712609
2016	6.414033027825254
2017	6.137839991743899
2018	5.509573834387578
2019	5.167204407588243
2020	5.394103277269152
2021	4.626401831970228
2022	4.808024763315461
2023	3.921506364256902