Year	Percent
1976	96.37165
1977	98.09274
1978	89.87952
1979	92.00337
1983	95.22028
1984	85.77303
1985	83.44969
1999	92.94456
2002	91.3813
2003	100.28158
2005	102.33789
2007	97.55083
2008	110.48654
2009	121.1288
2010	111.53277
2016	61.59091
