Year	Percent
1990-01-01	1.5200200000000001
1991-01-01	1.8152700000000002
1992-01-01	4.3849300000000010
1993-01-01	9.5973300000000000
1994-01-01	14.7106000000000000
1995-01-01	18.9577000000000000
1996-01-01	21.6149000000000000
1997-01-01	25.9906000000000000
1998-01-01	22.0519000000000000
1999-01-01	20.5475000000000000
2000-01-01	20.8493000000000000
2001-01-01	18.8171000000000000
2002-01-01	19.3391000000000000
2003-01-01	21.8978000000000000
2004-01-01	24.4873000000000000
2005-01-01	28.1567000000000000
2006-01-01	36.4926000000000000
2007-01-01	54.1826000000000000
2008-01-01	47.2017000000000000
2009-01-01	44.8735000000000000
2010-01-01	61.0689000000000000
2011-01-01	55.0700000000000000
2012-01-01	48.9267000000000000
2013-01-01	45.2599000000000000
2014-01-01	38.9922000000000000
2015-01-01	33.5922000000000000
2016-01-01	35.0041000000000000
2017-01-01	43.5583000000000000