Year	Percent
1996	1.01866
1997	1.26775
1998	1.02625
1999	0.89141
2000	0.63366
2001	0.31436
2002	0.61126
2003	0.98992
2004	1.17408
2005	1.37067
2006	1.08557
2007	0.96068
2008	0.71249
2009	0.97528
2010	1.46407
2011	1.40063
2012	1.26877
2013	1.37322
2014	1.60933
2015	1.5013
2016	1.58383
2017	1.41396