Year	%
2001	14.431359872999042
2002	11.794615046543347
2003	9.658208596062964
2004	10.103534270423147
2005	10.315642836347267
2006	10.508874582675167
2007	9.739559418050863
2008	8.893530826772206
2009	16.03893431344326
2010	13.586914205771484
2011	7.152419133302107
2012	6.810789007873702
2013	7.966327337990024
2014	10.435966205536209
2015	5.729851476754248
2016	6.958473571115623
2017	7.177322577433536
2018	6.185997689541772
2019	5.376453187407795