Year	%
1999	7.423877939422401
2000	17.22841609443429
2001	3.1022889694174918
2002	7.5158824855684525
2003	6.394622003757695
2004	7.362180945665446
2005	10.650475443331846
2006	7.166309340452138
2007	6.716966050254103
2008	7.131475931149774
2009	9.421063331513038
2010	8.679453451102225
2011	7.233986482312585
2012	5.974382468687471
2013	8.597206407538648
2014	9.584916782934373
2015	11.08079696946833
2016	8.636891639522442
2017	10.05702692135916
2018	8.50815066613836
2019	6.03679877441353
2020	7.3746956000833706
2021	7.810769149644342
2022	2.730164619751759