Year	%
1992	5.83
1993	4.94
1995	7.03
1996	6.67
1997	6.74
1998	9.13
1999	9.52
2000	8.96
2001	8.71
2002	6.45
2003	5.69
2004	5.54
2005	4.4
2006	4.47
2007	4.29
2008	3.65
2009	4.4
2010	3.71
2011	2.84
2012	2.85
2013	2.5
2014	2.71
2015	3.48
2016	4.36
2017	4.51
2018	5.6
2019	5.72
2020	6.59
2021	5.88