Year	Percent
1983	87.79151
1984	79.33322
1985	93.27475
1986	124.10682
1987	101.08363
1988	102.84507
1989	66.91914
1990	113.78656
1991	113.5987
1992	107.59614
1993	101.00623
1994	96.66893
1995	95.75673
1996	93.48112
1997	94.37603
1998	95.01493
1999	102.2725
2000	103.55827
2001	101.28337
2002	98.30185
2003	99.03957
2004	94.53586
2005	97.01907
2006	93.64273
2007	95.99802
2008	96.88196
2009	94.4263
2010	99.03758
2011	97.84619
2012	94.02135
2013	95.07193
2014	95.81686
2015	98.53801
2016	99.7747