Year	%
1995	10.18
1996	8.53
1997	8.46
1998	7.88
1999	7.61
2000	8.23
2001	7.95
2002	3.76
2003	8.13
2004	3.86
2005	7.73
2006	2.45
2007	3.47
2008	2.31
2009	2.51
2010	6.89
2011	6.52
2012	2.05
2013	2.06
2014	1.69
2015	1.83
2017	1.72
2018	1.39
2019	1.76
2020	1.81
2021	1.37