Year	%
1996	8.85
1997	9.5
2000	7.63
2001	7.91
2002	8.8
2008	2.75
2009	2.79
2010	2.63
2011	2.34
2012	2.47
2013	2.96
2014	2.39
2015	1.97
2016	1.82
2017	1.51
2018	1.65
2019	2.82
2020	1.76
2021	2.27