Year	Percent
1999	93.76519
2000	94.0733
2001	94.43719
2002	95.05255
2003	91.19674
2004	92.80254
2005	97.69481
2006	101.65233
2007	98.00907
2008	96.09029
2009	97.75165
2010	96.99776
2011	95.57856
2012	96.62817
2013	101.94789
2014	106.72635
2015	113.43378
2016	105.83229