Year	%
2002	1.79
2003	1.41
2004	1.26
2005	0.93
2006	0.98
2007	1.16
2008	0.74
2009	0.82
2010	0.89
2011	0.9
2012	1.04
2013	1.07
2014	0.85
2015	0.63
2016	1.31
2017	1.05
2018	1.23
2019	1.15