Year	%
1998	1.14
1999	1.11
2000	0.95
2001	1.29
2002	1.45
2003	1.69
2004	1.16
2005	1.27
2006	2.93
2007	2.88
2008	2.46
2009	2.68
2010	3.37
2011	2.66
2012	2.57
2013	2.5
2014	2.94
2015	3.55
2016	3.05
2017	2.97
2018	2.62
2019	2.1
2020	1.22
2021	1.53