Year	Percent
1975-12-31	11.4643
1976-12-31	11.7431
1977-12-31	8.4196
1978-12-31	9.1359
1979-12-31	13.753
1980-12-31	16.3031
1981-12-31	13.1776
1982-12-31	11.9298
1983-12-31	9.8571
1984-12-31	9.6803
1985-12-31	12.0786
1986-12-31	10.7426
1987-12-31	9.5963
1988-12-31	9.958
1989-12-31	13.6724
1990-12-31	14.6418
1991-12-31	11.5588
1992-12-31	9.4242
1993-12-31	5.8849
1994-12-31	5.3363
1995-12-31	6.5704
1996-12-31	5.8834
1997-12-31	6.5482
1998-12-31	7.2332
1999-12-31	5.3403
2000-12-31	5.9663
2001-12-31	5.1235
2002-12-31	4
2003-12-31	3.6917
2004-12-31	4.3858
2005-12-31	4.6468
2006-12-31	4.6379
2007-12-31	5.5128
2008-12-31	4.6821
2009-12-31	0.6423
2010-12-31	0.5
2011-12-31	0.5
2012-12-31	0.5
2013-12-31	0.5
2014-12-31	0.5
2015-12-31	0.5
2016-12-31	0.3972
2017-12-31	0.2897
2018-12-31	0.6038
2019-12-31	0.75
2020-12-31	0.2289
2021-12-31	0.1059
2022-12-31	1.466
2023-12-31	4.6823