Year	%
1992	6.846008
1996	4.537409
1997	4.537409
1998	4.537409
1999	4.422272
2000	4.496331
2001	4.537409
2002	4.537409
2003	3.597739
2004	6.578948
2005	5.721703
2006	8.264462
2007	7.221451
2008	4.257459
2009	4.792771
2010	4.871342
2011	3.614221
2014	0
2016	3.771057
2017	2.033864
2018	2.863845
2019	2.863872
2020	2.816769
2021	2.020412