Year	Percent
1989-01-01	1.2104000000000000
1990-01-01	4.3922099999999995
1991-01-01	5.6775699999999990
1992-01-01	6.6447000000000000
1993-01-01	14.1449000000000000
1994-01-01	22.4017000000000000
1995-01-01	31.9118000000000000
1996-01-01	34.4437000000000000
1997-01-01	24.1865000000000000
1998-01-01	16.4552000000000000
1999-01-01	33.1710000000000000
2000-01-01	26.5131000000000000
2001-01-01	14.0069000000000000
2002-01-01	14.1801000000000000
2003-01-01	18.4297000000000000
2004-01-01	24.3461000000000000
2005-01-01	25.6439000000000000
2006-01-01	30.7041000000000000
2007-01-01	40.3214000000000000
2008-01-01	30.2338000000000000
2009-01-01	28.2156000000000000
2010-01-01	39.8778000000000000
2011-01-01	42.7255000000000000
2012-01-01	43.1945000000000000
2013-01-01	40.3815000000000000
2014-01-01	40.2286000000000000
2015-01-01	42.0766000000000000
2016-01-01	41.7898000000000000
2017-01-01	46.5662000000000000