Year	%
1990	6.06
1993	6.72
1995	11.92
1996	5.94
1997	4.93
1998	4.53
1999	4.33
2000	4.43
2001	5.02
2002	4.52
2003	5.1
2004	4.15
2005	4.72
2006	5.88
2007	3.83
2008	3.5
2009	3.48
2010	3.07
2011	3.8
2012	4.53
2013	3.68
2014	3.71
2015	3.67
2016	3.93
2017	4.8
2018	4.67
2019	5.41
2020	3.96
2021	4.13