Year	Percent
1990	116.01585
1992	100.04205
1993	94.14834
1999	99.44853
2000	101.32666
2001	98.76452
2002	96.92155
2003	91.00756
2004	95.05466
2005	89.51834
2006	94.41874
2007	91.13421
2008	92.90386
2009	87.64085
2010	91.86621
2011	95.46579
2012	93.74721
2013	90.88706
2014	95.32661
2015	97.02347
2016	99.88426