Year	Percent
1995	99.47891
1999	96.27351
2000	95.51238
2001	100.40474
2002	101.96179
2003	96.37432
2004	94.62915
2005	96.40783
2006	98.32704
2007	96.30279
2008	94.91951
2009	92.0052
2010	91.67417
2011	92.26222
2012	92.68975
2013	96.38045
2014	96.08554
2015	97.90003
2016	96.25427
2017	97.71567