Year	%
1989	19.01
1990	6.47
1991	7.02
1992	8.11
1993	7.27
1994	7.24
1995	9.29
1996	7.6
1997	6.96
1998	9.12
1999	8.06
2000	6.41
2001	4.37
2002	4.18
2003	3.93
2004	3.25
2005	2.75
2006	2.85
2007	2.46
2008	2.47
2009	3.38
2010	3.05
2011	2.87
2012	2.9
2013	2.99
2014	3
2015	3.9
2016	5.3
2017	6.17
2018	5.33
2019	5.63
2020	6.33
2021	5.03