Year	Percent
1983-01-01	10.12400
1984-01-01	8.78700
1985-01-01	9.36938
1986-01-01	11.28310
1987-01-01	12.53880
1988-01-01	14.69520
1989-01-01	16.57970
1990-01-01	38.04390
1991-01-01	109.88000
1992-01-01	88.71250
1993-01-01	60.96850
1994-01-01	33.56880
1995-01-01	22.86030
1996-01-01	27.33460
1997-01-01	21.66420
1998-01-01	10.51240
1999-01-01	9.59662
2000-01-01	10.84150
2001-01-01	10.18080
2002-01-01	17.83540
2003-01-01	26.89840
2004-01-01	31.97500
2005-01-01	42.19530
2006-01-01	57.96810
2007-01-01	77.48940
2008-01-01	76.89590
2009-01-01	84.23470
2010-01-01	77.96430
2011-01-01	65.89680
2012-01-01	68.56770
2013-01-01	65.27370
2014-01-01	60.59940
2015-01-01	62.49130
2016-01-01	58.72230