Year	Percent
1999-01-01	89.7446
2000-01-01	98.1751
2001-01-01	87.4534
2002-01-01	72.3869
2003-01-01	83.1481
2004-01-01	86.2248
2005-01-01	87.4274
2006-01-01	97.7747
2007-01-01	106.4790
2008-01-01	57.5092
2009-01-01	73.6416
2010-01-01	75.6774
2011-01-01	60.8826
2012-01-01	72.7320
2013-01-01	83.2336
2014-01-01	80.9215
2015-01-01	85.1957
2016-01-01	92.2086