Year	Percent
1984	80.71719
1985	83.7475
1986	91.35832
1987	90.20229
1988	102.83815
1989	88.45135
1990	89.44591
1991	91.76149
1992	97.27035
1993	90.69746
1994	90.8537
1995	89.57888
2004	94.01895
2005	98.65393
2006	95.68264
2007	94.53159
2008	96.54374
2009	97.61406
2010	98.2046
2011	100.95672
2012	98.81209
2014	90.898
2015	91.80975