Year	%
1992	15.14
1993	10.03
1996	6.47
1997	5.83
1998	4.8
1999	3.9
2000	3.27
2001	4.3
2002	4.68
2003	5.23
2004	5.76
2005	4.87
2006	4.76
2007	3.76
2008	2.86
2009	2.6
2010	4.23
2011	2.86
2012	3
2013	2.37
2014	2.18
2015	2.17
2016	2.13
2017	2.13
2019	2.01
2020	1.94
2021	1.91