Year	%
1996	1.21
1997	1.1
1998	1.26
1999	1.35
2000	1.31
2001	1.23
2002	1.24
2003	1.02
2004	1.15
2005	1.07
2006	0.9
2008	0.88
2009	0.87
2011	0.78
2012	0.93
2013	0.84
2014	1.01
2015	0.76
2016	0.66
2017	0.76
2018	0.79
2019	0.72
2020	0.58
2021	0.62