Year	%
1989	4.47
1993	4.24
1995	9.74
1996	8.23
1997	7.87
1998	7.77
1999	8.74
2000	6.68
2001	6.76
2002	6.61
2003	16.9
2004	6.54
2005	6.53
2006	6.51
2007	6.57
2008	6.45
2009	6.23
2010	6.02
2011	6.04
2012	5.86
2013	5.86
2014	5.48
2015	5.5
2016	5.47
2017	5.33
2018	5.29
2019	7.73
2020	5.56
2021	5.17