Year	%
1993	15.96
1998	20.09
1999	14.01
2000	16.84
2002	15.45
2003	15.86
2004	15.49
2005	15.49
2006	13.26
2007	13.46
2008	421.5
2009	12.9
2010	13.35
2011	12.8
2012	12.87
2013	15.65
2014	11.31
2015	13.08
2016	13.07
2018	13.42
2019	15.43
2020	12.66
2021	12.92