Year	%
1999	12.67
2000	11.87
2001	7.41
2002	6.45
2003	6.44
2004	6.4
2005	5.95
2006	5.65
2007	8.54
2008	7.37
2009	5.83
2010	5.69
2011	6.81
2012	6.81
2013	4.54
2014	3.88
2015	4.54
2016	4.55
2017	22.35
2018	17.78
2019	7.7
2020	4.74
2021	4.78