Year	Percent
1993	99.44946
1994	93.98862
1995	91.50957
1996	82.40272
1997	99.47011
1998	95.40026
1999	92.1731
2000	89.51351
2001	95.16858
2002	97.58601
2003	92.69615
2004	95.59543
2005	93.43062
2006	91.60543
2007	98.13037
2008	90.73683
2009	91.77172
2010	89.51445
2011	92.80683
2012	91.99119
2013	88.08941
2014	98.12571
2015	103.28021
2016	111.30191