Year	Percent
1980-01-01	0.6174740000000000
1981-01-01	0.8203060000000000
1982-01-01	0.9892440000000000
1983-01-01	1.2225800000000000
1984-01-01	1.5878500000000000
1985-01-01	2.3041099999999997
1986-01-01	2.3161400000000003
1987-01-01	2.5117500000000000
1988-01-01	2.6263799999999997
1989-01-01	3.0235400000000000
1990-01-01	3.0042400000000002
1991-01-01	3.5113600000000000
1992-01-01	3.1919100000000000
1993-01-01	4.1532900000000000
1994-01-01	4.8092100000000000
1995-01-01	5.3052100000000000
1996-01-01	5.2713600000000000
1997-01-01	6.3634800000000000
1998-01-01	7.5950300000000000
1999-01-01	11.2356000000000000
2000-01-01	15.9670000000000000
2001-01-01	20.9600000000000000
2002-01-01	23.7025000000000000
2003-01-01	25.5575000000000000
2004-01-01	27.9528000000000000
2005-01-01	26.9524000000000000
2006-01-01	34.2511000000000000
2007-01-01	38.2023000000000000
2008-01-01	39.7290000000000000
2009-01-01	49.5418000000000000
2010-01-01	47.9925000000000000
2011-01-01	44.3062000000000000
2012-01-01	46.7969000000000000
2013-01-01	48.2442000000000000
2014-01-01	41.0438000000000000
2015-01-01	43.1215000000000000
2016-01-01	39.5404000000000000