Year	%
1989	5.81
1990	5.26
1993	5.95
1995	4.92
1996	3.72
1997	7.19
1998	2.39
1999	3.25
2000	2.76
2001	2.61
2002	3.89
2003	3.36
2004	3.29
2005	3.95
2006	3.76
2007	2.5
2008	2.52
2009	1.94
2010	2.54
2011	2.57
2012	2.3
2013	2.16
2016	3.33
2017	3.61
2018	3.77
2019	4.14
2020	4.43
2021	3.94