Year	%
1994	36.92
1999	16.57
2000	16.51
2001	19.54
2002	18.38
2004	18.69
2005	15.4
2006	15.03
2007	15
2008	15.61
2009	15.61
2010	15.61
2011	15.48
2012	16.55
2013	16.38
2014	16.67
2015	16.54
2016	16.54
2018	16.59
2019	16.62
2020	16.52
2021	16.71