Year	%
1988	4.83
1989	4.92
1990	4.7
1991	5.45
1992	5.73
1993	5.84
1994	5.91
1995	9.38
1996	10.32
1997	8.15
1998	8.23
1999	9.35
2000	10
2001	13.02
2002	12.9
2003	12.27
2004	8.63
2005	7.43
2006	3.8
2007	3.66
2008	3.11
2009	4.03
2010	2.7
2011	2.96
2012	2.72
2013	1.13
2014	2.96
2015	3.59
2016	4.67
2017	4.49
2018	4.19
2019	6.51
2020	4.16
2021	3.04