Year	Percent
1984	97.24782
1985	98.39267
1986	101.16993
1987	101.46814
1988	114.01055
1989	99.61086
1990	100.21039
1991	101.99597
1992	107.85378
1993	101.13755
1994	100.86525
1995	98.23135
2004	102.20091
2005	106.45728
2006	102.03656
2007	100.04842
2008	100.67772
2009	99.74934
2010	99.67127
2011	101.52919
2012	100.86451
2014	92.20482
2015	93.07876