Year	Percent
1992	13.52237
1993	13.35241
1994	13.29019
1995	13.21254
1996	13.19523
1997	13.30934
1998	13.26433
1999	13.22817
2000	13.25667
2001	13.23902
2002	13.2258
2003	13.20293
2004	13.1846
2005	13.16616
2006	13.15737
2007	13.15584
2008	13.15844
2009	13.15844
2010	13.15844
2011	13.15844
2012	13.15844
2013	13.15844
2014	13.15844
2015	13.15844
2016	13.15844
2017	13.15844
2018	13.15844
2019	13.15844
2020	13.15844
2021	13.15844