Year	%
1994	21.78
1995	21.56
2001	22.06
2002	22.24
2003	23.2
2004	23.2
2005	23
2006	23.12
2007	21.84
2008	21.83
2009	21.94
2010	21.83
2011	21.62
2012	21.95
2013	21.84
2014	22.93
2019	22.02