Year	Percent
2001	100.29034
2002	101.39599
2003	96.99559
2004	95.07999
2005	96.61712
2006	98.36378
2007	96.03291
2008	94.98416
2009	91.46611
2010	91.29567
2011	91.50894
2012	92.19428
2013	95.4696
2014	95.44685
2015	97.28973
2016	95.82027
2017	97.02275