Year	Percent
1989-01-01	5.4644300000000000
1990-01-01	7.8029699999999990
1991-01-01	7.0628899999999994
1992-01-01	6.9535500000000000
1993-01-01	4.7317599999999995
1994-01-01	18.9888000000000000
1995-01-01	10.9229000000000000
1996-01-01	22.1750000000000000
1997-01-01	33.4745000000000000
1998-01-01	22.1499000000000000
1999-01-01	31.6056000000000000
2000-01-01	36.1113000000000000
2001-01-01	15.2644000000000000
2002-01-01	10.9276000000000000
2003-01-01	13.2993000000000000
2004-01-01	18.3308000000000000
2005-01-01	42.8342000000000000
2006-01-01	54.8636000000000000
2007-01-01	53.1343000000000000
2008-01-01	77.2058000000000000
2009-01-01	82.8820000000000000
2010-01-01	41.9985000000000000
2011-01-01	24.2046000000000000
2012-01-01	31.8977000000000000
2013-01-01	21.4278000000000000
2014-01-01	41.2155000000000000
2015-01-01	23.8305000000000000
2016-01-01	24.0170000000000000
2017-01-01	44.4476000000000000