Year	%
1993	15.96
1998	20.09
1999	14.01
2000	16.84
2002	15.45
2003	15.86
2004	15.49
2005	15.4
2006	13.13
2007	13.29
2008	421.5
2009	12.65
2010	13.05
2011	12.45
2012	12.45
2013	15.04
2014	10.55
2015	12.31
2016	12.35
2018	12.36
2019	14.22
2020	11.6
2021	11.99