Year	%
1995	12.88
1996	11.18
1997	12.81
1998	11.66
1999	11.79
2000	11.02
2001	12.36
2002	10.26
2003	10.29
2004	7.91
2005	7.02
2006	6.69
2007	5.37
2008	3.94
2009	8.72
2010	8.17
2011	7.87
2012	7.78
2013	6.54
2015	2.74
2018	4.28
2020	3.6
2021	3.36