Year	Percent
1995-01-01	29.1882
1996-01-01	27.8379
1997-01-01	41.2422
1998-01-01	38.5224
1999-01-01	26.5352
2000-01-01	27.4189
2001-01-01	33.6964
2002-01-01	39.8743
2003-01-01	48.5458
2004-01-01	47.7843
2005-01-01	39.7575
2006-01-01	49.8054
2007-01-01	47.9617
2008-01-01	29.9895
2009-01-01	32.7732
2010-01-01	33.8775
2011-01-01	28.2387
2012-01-01	33.9214
2013-01-01	23.3457
2014-01-01	21.0730
2015-01-01	16.8961
2016-01-01	13.0379