Year	%
1989	8.71
1993	1.8
1995	7.56
1996	6.13
1997	4.46
1998	4.66
1999	1.97
2000	3.74
2001	4.57
2002	4.32
2003	9.8
2004	3.99
2005	3.37
2006	3.14
2007	3.26
2008	2.84
2009	3.58
2010	3.11
2011	2.7
2012	2.98
2013	3.14
2014	3.17
2015	3.95
2016	4.16
2017	4.31
2018	4.09
2019	4.96
2020	4.52
2021	5.15