Year	%
1993	16.89
1998	11
1999	11.87
2000	12.39
2001	12.4
2002	12.29
2003	11.73
2004	12.74
2005	14.61
2006	13.82
2007	14.18
2008	14
2009	14.4
2010	13.46
2011	13.9
2012	13.93
2013	13.29
2014	13.54
2015	14.77
2016	15.04
2017	15.51
2018	14.35
2019	14.86
2020	15.24
2021	16.09