Year	Percent
1992-01-01	14.6404
1993-01-01	22.9643
1994-01-01	11.7920
1995-01-01	13.2064
1996-01-01	10.4842
1997-01-01	11.8534
1998-01-01	12.5823
1999-01-01	10.6622
2000-01-01	12.8059
2001-01-01	13.6167
2002-01-01	12.0637
2003-01-01	12.2286
2004-01-01	14.0693
2005-01-01	13.0346
2006-01-01	13.6098
2007-01-01	16.0964
2008-01-01	19.3164
2009-01-01	23.2444
2010-01-01	22.1789
2011-01-01	23.9173
2012-01-01	28.1371
2013-01-01	30.0542
2014-01-01	31.6049
2015-01-01	36.8457
2016-01-01	34.3104