Year	%
1996	17.55
1999	15.51
2000	12.4
2001	13.68
2002	13.8
2003	13.42
2006	14.28
2007	14.84
2008	14.2
2009	13.78
2010	13.45
2011	14.37
2012	15.31
2013	15.29
2014	13.37
2015	13.42
2016	13.47
2017	54.48
2018	54.47
2019	54.44
2020	11