Year	%
1989	4.43
1993	3.87
1995	8.19
1996	7
1997	6.17
1998	5.56
1999	6.47
2000	5.06
2001	5.57
2002	5.27
2003	17.41
2004	5.2
2005	5.3
2006	5.16
2007	5.05
2008	5.03
2009	4.94
2010	4.79
2011	4.89
2012	4.48
2013	4.34
2014	4.45
2015	4.51
2016	4.38
2017	3.73
2018	3.67
2019	5.06
2020	3.72
2021	3.88