Year	%
1995	2.94
1996	1.69
1997	2.77
1998	2.76
2000	1.33
2001	1.63
2002	1.25
2003	2.04
2004	1.83
2005	6.81
2006	4.69
2007	4.39
2008	3.16
2009	4.12
2010	3.21
2011	3.09
2012	2.91
2013	3.45
2014	3.12
2015	9.15
2016	5.05
2017	4.97
2018	5.81
2019	6.74
2020	6.73
2021	6.18