Year	%
1995	44.95
1998	43.04
1999	24.58
2000	24.49
2001	17.93
2002	16.51
2003	16.18
2004	14.7
2005	13.18
2006	13.13
2007	12.72
2008	11.6
2009	12.66
2010	12.53
2011	12.56
2012	11.84
2013	11.85
2014	11.48
2015	10.86
2016	11.22
2018	11.23
2019	11.44
2020	10.64
2021	10.76