Year	%
1995	53.14
1998	48.77
1999	25.71
2000	25.35
2001	20.91
2002	17.83
2003	17.58
2004	17.09
2005	14.74
2006	14.75
2007	14.53
2008	14.02
2009	14.3
2010	14.33
2011	14.33
2012	14.18
2013	14.16
2014	14.07
2015	12.92
2016	12.51
2018	12.54
2019	12.51
2020	11.75
2021	11.62