Year	Percent
1992-01-01	28.729900000000000
1993-01-01	34.394300000000000
1994-01-01	8.984720000000000
1995-01-01	11.808600000000000
1996-01-01	12.682900000000000
1997-01-01	12.724200000000000
1998-01-01	13.496100000000000
1999-01-01	11.995000000000000
2000-01-01	10.249000000000000
2001-01-01	8.846730000000000
2002-01-01	7.897160000000000
2003-01-01	8.156760000000000
2004-01-01	9.444490000000000
2005-01-01	9.815380000000001
2006-01-01	10.404900000000000
2007-01-01	12.761600000000000
2008-01-01	16.557400000000000
2009-01-01	22.080200000000000
2010-01-01	21.307200000000000
2011-01-01	19.508100000000000
2012-01-01	21.575800000000000
2013-01-01	24.593500000000000
2014-01-01	28.842900000000000
2015-01-01	37.704600000000000
2016-01-01	33.960700000000000