Year	Percent
1994	39.02423
1995	56.04995
1996	73.48553
1997	74.27042
1998	82.38335
1999	84.38332
2000	77.31659
2001	61.83151
2002	66.77708
2003	67.67542
2004	75.05193
2005	72.10655
2006	99.57769
2007	108.07701
2008	115.33169
2009	100.49334
2010	103.84498
2011	100.68305
2012	110.03098
2013	110.8094
2014	102.71707
2015	83.07999
2016	81.8072
2017	82.91099