Year	Percent
1983	86.3255
1984	80.83859
1985	93.42437
1986	125.32336
1987	100.05133
1988	102.70424
1989	67.97723
1990	113.64991
1991	114.1379
1992	109.69638
1993	101.98876
1994	97.50569
1995	95.85963
1996	93.85681
1997	93.82466
1998	97.42869
1999	102.68891
2000	102.79398
2001	101.88956
2002	98.338
2003	99.16805
2004	96.03674
2005	97.48793
2006	95.00874
2007	97.42126
2008	97.0626
2009	94.78924
2010	99.26861
2011	98.43354
2012	95.62267
2013	97.34062
2014	96.91483
2015	100.48056
2016	101.05705